Toward self-assembling dendrimers: Metal complexation induces the assembly of hyperbranched structures

Tetrahedron Letters

Volumn 37, Issue 46, 1996, Pages 8293-8296

  Tzalis, Dimitrios ^a   Tor, Yitzhak ^a  

^a UNIVERSITY OF CALIFORNIA   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

POLYMER;

ARTICLE; CATALYSIS; COMPLEX FORMATION; MASS SPECTROMETRY; POLYMERIZATION; REACTION ANALYSIS;

EID: 0030580313     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/0040-4039(96)01940-5     Document Type: Article

References (25)

1. 1. (a) Tomalia, D.A.; Durst, H.D. Top. Curr. Chem. 1993, 165, 193-313;
2. (b) Moorefield, C.N.; Newkome, G.R. Adv. Dendritic Macromol. 1994, 1, 1.
3. 2. Fréchet, J.-M.J. Science 1994, 263, 1710-1715.
4. 3. Tomalia, D.A.; Dvornik, P.R. Nature 1994, 372, 617-618; Service, R.F. Science 1995, 267, 458-459; O'Sullivan, D.A. Chem. & Eng. News 1993, 20-23 (August 16).
5. 3. Tomalia, D.A.; Dvornik, P.R. Nature 1994, 372, 617-618; Service, R.F. Science 1995, 267, 458-459; O'Sullivan, D.A. Chem. & Eng. News 1993, 20-23 (August 16).
6. 3. Tomalia, D.A.; Dvornik, P.R. Nature 1994, 372, 617-618; Service, R.F. Science 1995, 267, 458-459; O'Sullivan, D.A. Chem. & Eng. News 1993, 20-23 (August 16).
7. 4. Mekelburger, H.-B.; Jaworek, W.; Vögtle F. Angew. Chem. Int. Ed. Engl. 1992, 31, 1571-1576.
8. 5. Zimmerman, S.C.; Zeng, F.W.; Reichert, D.E.C.; Kolotuchin, S.V. Science 1996, 271, 1095-1098.
9. 6. For various other metal-containing dendritic structures, see: Constable, E.C.; Cargill Thompson A.M.W. J. Chem. Soc. Chem. Comm. 1992, 617-619; Fillaut, J.-L.; Astruc, D. J. Chem. Soc. Chem. Comm. 1992, 1320-1321; Newkome, G.R.; Cardullo, F.; Constable, E.C.; Moorefield, C.N.; Cargill Thompson, A.M.W. J. Chem. Soc. Chem. Comm. 1993, 925-927; Jin, R.-H.; Aida, T.; Inoue, S. J. Chem. Soc. Chem. Comm. 1993, 1260-1262; Liao, Y.-H.; Moss, J.R. J. Chem. Soc. Chem. Comm. 1993, 1774-1777; Achar, S.; Puddephatt, R.J. J. Chem. Soc. Chem. Comm. 1994, 1895-1896; Dandliker, P.J.; Diederich, F.; Gross, M.; Knobler, C.B.; Louati, A.; Sanford, E.M. Angew. Chem. Int. Ed. Engl. 1994, 33, 1739-1742; Newkome, G.R.; Güther, R.; Moorefield, C.N.; Cardullo, F.; Echegoyen, L.; Pérez-Cordero, E.; Luftmann, H. Angew. Chem. Int. Ed. Engl. 1995, 34, 2023-2026; Campagna, S.; Denti, G,; Serroni, S.; Juris, A.; Venturi, M.; Ricevuto, V.; Balzani, V. Chem. Eur. J. 1995, 1, 211-221; Huck, W.T.S.; van Veggel, F.C.J.M.; Reinhoudt, D.N. Angew. Chem. Int. Ed. Engl. 1996, 35, 1213-1215; Constable, E.C.; Harverson, P.; Oberholzer, M. Chem. Commun. 1996, 1821-1822; Armspach, D.; Cattalini, M.; Constable, E.C.; Housecrof, C.F.; Phillips, D. Chem. Commun. 1996, 1823-1824; Lange, P.; Schier, A.; Schmidbaur, H. Inorg. Chem. 1996, 35, 637-642.
10. 6. For various other metal-containing dendritic structures, see: Constable, E.C.; Cargill Thompson A.M.W. J. Chem. Soc. Chem. Comm. 1992, 617-619; Fillaut, J.-L.; Astruc, D. J. Chem. Soc. Chem. Comm. 1992, 1320-1321; Newkome, G.R.; Cardullo, F.; Constable, E.C.; Moorefield, C.N.; Cargill Thompson, A.M.W. J. Chem. Soc. Chem. Comm. 1993, 925-927; Jin, R.-H.; Aida, T.; Inoue, S. J. Chem. Soc. Chem. Comm. 1993, 1260-1262; Liao, Y.-H.; Moss, J.R. J. Chem. Soc. Chem. Comm. 1993, 1774-1777; Achar, S.; Puddephatt, R.J. J. Chem. Soc. Chem. Comm. 1994, 1895-1896; Dandliker, P.J.; Diederich, F.; Gross, M.; Knobler, C.B.; Louati, A.; Sanford, E.M. Angew. Chem. Int. Ed. Engl. 1994, 33, 1739-1742; Newkome, G.R.; Güther, R.; Moorefield, C.N.; Cardullo, F.; Echegoyen, L.; Pérez-Cordero, E.; Luftmann, H. Angew. Chem. Int. Ed. Engl. 1995, 34, 2023-2026; Campagna, S.; Denti, G,; Serroni, S.; Juris, A.; Venturi, M.; Ricevuto, V.; Balzani, V. Chem. Eur. J. 1995, 1, 211-221; Huck, W.T.S.; van Veggel, F.C.J.M.; Reinhoudt, D.N. Angew. Chem. Int. Ed. Engl. 1996, 35, 1213-1215; Constable, E.C.; Harverson, P.; Oberholzer, M. Chem. Commun. 1996, 1821-1822; Armspach, D.; Cattalini, M.; Constable, E.C.; Housecrof, C.F.; Phillips, D. Chem. Commun. 1996, 1823-1824; Lange, P.; Schier, A.; Schmidbaur, H. Inorg. Chem. 1996, 35, 637-642.
11. 6. For various other metal-containing dendritic structures, see: Constable, E.C.; Cargill Thompson A.M.W. J. Chem. Soc. Chem. Comm. 1992, 617-619; Fillaut, J.-L.; Astruc, D. J. Chem. Soc. Chem. Comm. 1992, 1320-1321; Newkome, G.R.; Cardullo, F.; Constable, E.C.; Moorefield, C.N.; Cargill Thompson, A.M.W. J. Chem. Soc. Chem. Comm. 1993, 925-927; Jin, R.-H.; Aida, T.; Inoue, S. J. Chem. Soc. Chem. Comm. 1993, 1260-1262; Liao, Y.-H.; Moss, J.R. J. Chem. Soc. Chem. Comm. 1993, 1774-1777; Achar, S.; Puddephatt, R.J. J. Chem. Soc. Chem. Comm. 1994, 1895-1896; Dandliker, P.J.; Diederich, F.; Gross, M.; Knobler, C.B.; Louati, A.; Sanford, E.M. Angew. Chem. Int. Ed. Engl. 1994, 33, 1739-1742; Newkome, G.R.; Güther, R.; Moorefield, C.N.; Cardullo, F.; Echegoyen, L.; Pérez-Cordero, E.; Luftmann, H. Angew. Chem. Int. Ed. Engl. 1995, 34, 2023-2026; Campagna, S.; Denti, G,; Serroni, S.; Juris, A.; Venturi, M.; Ricevuto, V.; Balzani, V. Chem. Eur. J. 1995, 1, 211-221; Huck, W.T.S.; van Veggel, F.C.J.M.; Reinhoudt, D.N. Angew. Chem. Int. Ed. Engl. 1996, 35, 1213-1215; Constable, E.C.; Harverson, P.; Oberholzer, M. Chem. Commun. 1996, 1821-1822; Armspach, D.; Cattalini, M.; Constable, E.C.; Housecrof, C.F.; Phillips, D. Chem. Commun. 1996, 1823-1824; Lange, P.; Schier, A.; Schmidbaur, H. Inorg. Chem. 1996, 35, 637-642.
12. 6. For various other metal-containing dendritic structures, see: Constable, E.C.; Cargill Thompson A.M.W. J. Chem. Soc. Chem. Comm. 1992, 617-619; Fillaut, J.-L.; Astruc, D. J. Chem. Soc. Chem. Comm. 1992, 1320-1321; Newkome, G.R.; Cardullo, F.; Constable, E.C.; Moorefield, C.N.; Cargill Thompson, A.M.W. J. Chem. Soc. Chem. Comm. 1993, 925-927; Jin, R.-H.; Aida, T.; Inoue, S. J. Chem. Soc. Chem. Comm. 1993, 1260-1262; Liao, Y.-H.; Moss, J.R. J. Chem. Soc. Chem. Comm. 1993, 1774-1777; Achar, S.; Puddephatt, R.J. J. Chem. Soc. Chem. Comm. 1994, 1895-1896; Dandliker, P.J.; Diederich, F.; Gross, M.; Knobler, C.B.; Louati, A.; Sanford, E.M. Angew. Chem. Int. Ed. Engl. 1994, 33, 1739-1742; Newkome, G.R.; Güther, R.; Moorefield, C.N.; Cardullo, F.; Echegoyen, L.; Pérez-Cordero, E.; Luftmann, H. Angew. Chem. Int. Ed. Engl. 1995, 34, 2023-2026; Campagna, S.; Denti, G,; Serroni, S.; Juris, A.; Venturi, M.; Ricevuto, V.; Balzani, V. Chem. Eur. J. 1995, 1, 211-221; Huck, W.T.S.; van Veggel, F.C.J.M.; Reinhoudt, D.N. Angew. Chem. Int. Ed. Engl. 1996, 35, 1213-1215; Constable, E.C.; Harverson, P.; Oberholzer, M. Chem. Commun. 1996, 1821-1822; Armspach, D.; Cattalini, M.; Constable, E.C.; Housecrof, C.F.; Phillips, D. Chem. Commun. 1996, 1823-1824; Lange, P.; Schier, A.; Schmidbaur, H. Inorg. Chem. 1996, 35, 637-642.
13. 6. For various other metal-containing dendritic structures, see: Constable, E.C.; Cargill Thompson A.M.W. J. Chem. Soc. Chem. Comm. 1992, 617-619; Fillaut, J.-L.; Astruc, D. J. Chem. Soc. Chem. Comm. 1992, 1320-1321; Newkome, G.R.; Cardullo, F.; Constable, E.C.; Moorefield, C.N.; Cargill Thompson, A.M.W. J. Chem. Soc. Chem. Comm. 1993, 925-927; Jin, R.-H.; Aida, T.; Inoue, S. J. Chem. Soc. Chem. Comm. 1993, 1260-1262; Liao, Y.-H.; Moss, J.R. J. Chem. Soc. Chem. Comm. 1993, 1774-1777; Achar, S.; Puddephatt, R.J. J. Chem. Soc. Chem. Comm. 1994, 1895-1896; Dandliker, P.J.; Diederich, F.; Gross, M.; Knobler, C.B.; Louati, A.; Sanford, E.M. Angew. Chem. Int. Ed. Engl. 1994, 33, 1739-1742; Newkome, G.R.; Güther, R.; Moorefield, C.N.; Cardullo, F.; Echegoyen, L.; Pérez-Cordero, E.; Luftmann, H. Angew. Chem. Int. Ed. Engl. 1995, 34, 2023-2026; Campagna, S.; Denti, G,; Serroni, S.; Juris, A.; Venturi, M.; Ricevuto, V.; Balzani, V. Chem. Eur. J. 1995, 1, 211-221; Huck, W.T.S.; van Veggel, F.C.J.M.; Reinhoudt, D.N. Angew. Chem. Int. Ed. Engl. 1996, 35, 1213-1215; Constable, E.C.; Harverson, P.; Oberholzer, M. Chem. Commun. 1996, 1821-1822; Armspach, D.; Cattalini, M.; Constable, E.C.; Housecrof, C.F.; Phillips, D. Chem. Commun. 1996, 1823-1824; Lange, P.; Schier, A.; Schmidbaur, H. Inorg. Chem. 1996, 35, 637-642.
14. 6. For various other metal-containing dendritic structures, see: Constable, E.C.; Cargill Thompson A.M.W. J. Chem. Soc. Chem. Comm. 1992, 617-619; Fillaut, J.-L.; Astruc, D. J. Chem. Soc. Chem. Comm. 1992, 1320-1321; Newkome, G.R.; Cardullo, F.; Constable, E.C.; Moorefield, C.N.; Cargill Thompson, A.M.W. J. Chem. Soc. Chem. Comm. 1993, 925-927; Jin, R.-H.; Aida, T.; Inoue, S. J. Chem. Soc. Chem. Comm. 1993, 1260-1262; Liao, Y.-H.; Moss, J.R. J. Chem. Soc. Chem. Comm. 1993, 1774-1777; Achar, S.; Puddephatt, R.J. J. Chem. Soc. Chem. Comm. 1994, 1895-1896; Dandliker, P.J.; Diederich, F.; Gross, M.; Knobler, C.B.; Louati, A.; Sanford, E.M. Angew. Chem. Int. Ed. Engl. 1994, 33, 1739-1742; Newkome, G.R.; Güther, R.; Moorefield, C.N.; Cardullo, F.; Echegoyen, L.; Pérez-Cordero, E.; Luftmann, H. Angew. Chem. Int. Ed. Engl. 1995, 34, 2023-2026; Campagna, S.; Denti, G,; Serroni, S.; Juris, A.; Venturi, M.; Ricevuto, V.; Balzani, V. Chem. Eur. J. 1995, 1, 211-221; Huck, W.T.S.; van Veggel, F.C.J.M.; Reinhoudt, D.N. Angew. Chem. Int. Ed. Engl. 1996, 35, 1213-1215; Constable, E.C.; Harverson, P.; Oberholzer, M. Chem. Commun. 1996, 1821-1822; Armspach, D.; Cattalini, M.; Constable, E.C.; Housecrof, C.F.; Phillips, D. Chem. Commun. 1996, 1823-1824; Lange, P.; Schier, A.; Schmidbaur, H. Inorg. Chem. 1996, 35, 637-642.
15. 6. For various other metal-containing dendritic structures, see: Constable, E.C.; Cargill Thompson A.M.W. J. Chem. Soc. Chem. Comm. 1992, 617-619; Fillaut, J.-L.; Astruc, D. J. Chem. Soc. Chem. Comm. 1992, 1320-1321; Newkome, G.R.; Cardullo, F.; Constable, E.C.; Moorefield, C.N.; Cargill Thompson, A.M.W. J. Chem. Soc. Chem. Comm. 1993, 925-927; Jin, R.-H.; Aida, T.; Inoue, S. J. Chem. Soc. Chem. Comm. 1993, 1260-1262; Liao, Y.-H.; Moss, J.R. J. Chem. Soc. Chem. Comm. 1993, 1774-1777; Achar, S.; Puddephatt, R.J. J. Chem. Soc. Chem. Comm. 1994, 1895-1896; Dandliker, P.J.; Diederich, F.; Gross, M.; Knobler, C.B.; Louati, A.; Sanford, E.M. Angew. Chem. Int. Ed. Engl. 1994, 33, 1739-1742; Newkome, G.R.; Güther, R.; Moorefield, C.N.; Cardullo, F.; Echegoyen, L.; Pérez-Cordero, E.; Luftmann, H. Angew. Chem. Int. Ed. Engl. 1995, 34, 2023-2026; Campagna, S.; Denti, G,; Serroni, S.; Juris, A.; Venturi, M.; Ricevuto, V.; Balzani, V. Chem. Eur. J. 1995, 1, 211-221; Huck, W.T.S.; van Veggel, F.C.J.M.; Reinhoudt, D.N. Angew. Chem. Int. Ed. Engl. 1996, 35, 1213-1215; Constable, E.C.; Harverson, P.; Oberholzer, M. Chem. Commun. 1996, 1821-1822; Armspach, D.; Cattalini, M.; Constable, E.C.; Housecrof, C.F.; Phillips, D. Chem. Commun. 1996, 1823-1824; Lange, P.; Schier, A.; Schmidbaur, H. Inorg. Chem. 1996, 35, 637-642.
16. 6. For various other metal-containing dendritic structures, see: Constable, E.C.; Cargill Thompson A.M.W. J. Chem. Soc. Chem. Comm. 1992, 617-619; Fillaut, J.-L.; Astruc, D. J. Chem. Soc. Chem. Comm. 1992, 1320-1321; Newkome, G.R.; Cardullo, F.; Constable, E.C.; Moorefield, C.N.; Cargill Thompson, A.M.W. J. Chem. Soc. Chem. Comm. 1993, 925-927; Jin, R.-H.; Aida, T.; Inoue, S. J. Chem. Soc. Chem. Comm. 1993, 1260-1262; Liao, Y.-H.; Moss, J.R. J. Chem. Soc. Chem. Comm. 1993, 1774-1777; Achar, S.; Puddephatt, R.J. J. Chem. Soc. Chem. Comm. 1994, 1895-1896; Dandliker, P.J.; Diederich, F.; Gross, M.; Knobler, C.B.; Louati, A.; Sanford, E.M. Angew. Chem. Int. Ed. Engl. 1994, 33, 1739-1742; Newkome, G.R.; Güther, R.; Moorefield, C.N.; Cardullo, F.; Echegoyen, L.; Pérez-Cordero, E.; Luftmann, H. Angew. Chem. Int. Ed. Engl. 1995, 34, 2023-2026; Campagna, S.; Denti, G,; Serroni, S.; Juris, A.; Venturi, M.; Ricevuto, V.; Balzani, V. Chem. Eur. J. 1995, 1, 211-221; Huck, W.T.S.; van Veggel, F.C.J.M.; Reinhoudt, D.N. Angew. Chem. Int. Ed. Engl. 1996, 35, 1213-1215; Constable, E.C.; Harverson, P.; Oberholzer, M. Chem. Commun. 1996, 1821-1822; Armspach, D.; Cattalini, M.; Constable, E.C.; Housecrof, C.F.; Phillips, D. Chem. Commun. 1996, 1823-1824; Lange, P.; Schier, A.; Schmidbaur, H. Inorg. Chem. 1996, 35, 637-642.
17. 6. For various other metal-containing dendritic structures, see: Constable, E.C.; Cargill Thompson A.M.W. J. Chem. Soc. Chem. Comm. 1992, 617-619; Fillaut, J.-L.; Astruc, D. J. Chem. Soc. Chem. Comm. 1992, 1320-1321; Newkome, G.R.; Cardullo, F.; Constable, E.C.; Moorefield, C.N.; Cargill Thompson, A.M.W. J. Chem. Soc. Chem. Comm. 1993, 925-927; Jin, R.-H.; Aida, T.; Inoue, S. J. Chem. Soc. Chem. Comm. 1993, 1260-1262; Liao, Y.-H.; Moss, J.R. J. Chem. Soc. Chem. Comm. 1993, 1774-1777; Achar, S.; Puddephatt, R.J. J. Chem. Soc. Chem. Comm. 1994, 1895-1896; Dandliker, P.J.; Diederich, F.; Gross, M.; Knobler, C.B.; Louati, A.; Sanford, E.M. Angew. Chem. Int. Ed. Engl. 1994, 33, 1739-1742; Newkome, G.R.; Güther, R.; Moorefield, C.N.; Cardullo, F.; Echegoyen, L.; Pérez-Cordero, E.; Luftmann, H. Angew. Chem. Int. Ed. Engl. 1995, 34, 2023-2026; Campagna, S.; Denti, G,; Serroni, S.; Juris, A.; Venturi, M.; Ricevuto, V.; Balzani, V. Chem. Eur. J. 1995, 1, 211-221; Huck, W.T.S.; van Veggel, F.C.J.M.; Reinhoudt, D.N. Angew. Chem. Int. Ed. Engl. 1996, 35, 1213-1215; Constable, E.C.; Harverson, P.; Oberholzer, M. Chem. Commun. 1996, 1821-1822; Armspach, D.; Cattalini, M.; Constable, E.C.; Housecrof, C.F.; Phillips, D. Chem. Commun. 1996, 1823-1824; Lange, P.; Schier, A.; Schmidbaur, H. Inorg. Chem. 1996, 35, 637-642.
18. 6. For various other metal-containing dendritic structures, see: Constable, E.C.; Cargill Thompson A.M.W. J. Chem. Soc. Chem. Comm. 1992, 617-619; Fillaut, J.-L.; Astruc, D. J. Chem. Soc. Chem. Comm. 1992, 1320-1321; Newkome, G.R.; Cardullo, F.; Constable, E.C.; Moorefield, C.N.; Cargill Thompson, A.M.W. J. Chem. Soc. Chem. Comm. 1993, 925-927; Jin, R.-H.; Aida, T.; Inoue, S. J. Chem. Soc. Chem. Comm. 1993, 1260-1262; Liao, Y.-H.; Moss, J.R. J. Chem. Soc. Chem. Comm. 1993, 1774-1777; Achar, S.; Puddephatt, R.J. J. Chem. Soc. Chem. Comm. 1994, 1895-1896; Dandliker, P.J.; Diederich, F.; Gross, M.; Knobler, C.B.; Louati, A.; Sanford, E.M. Angew. Chem. Int. Ed. Engl. 1994, 33, 1739-1742; Newkome, G.R.; Güther, R.; Moorefield, C.N.; Cardullo, F.; Echegoyen, L.; Pérez-Cordero, E.; Luftmann, H. Angew. Chem. Int. Ed. Engl. 1995, 34, 2023-2026; Campagna, S.; Denti, G,; Serroni, S.; Juris, A.; Venturi, M.; Ricevuto, V.; Balzani, V. Chem. Eur. J. 1995, 1, 211-221; Huck, W.T.S.; van Veggel, F.C.J.M.; Reinhoudt, D.N. Angew. Chem. Int. Ed. Engl. 1996, 35, 1213-1215; Constable, E.C.; Harverson, P.; Oberholzer, M. Chem. Commun. 1996, 1821-1822; Armspach, D.; Cattalini, M.; Constable, E.C.; Housecrof, C.F.; Phillips, D. Chem. Commun. 1996, 1823-1824; Lange, P.; Schier, A.; Schmidbaur, H. Inorg. Chem. 1996, 35, 637-642.
19. 6. For various other metal-containing dendritic structures, see: Constable, E.C.; Cargill Thompson A.M.W. J. Chem. Soc. Chem. Comm. 1992, 617-619; Fillaut, J.-L.; Astruc, D. J. Chem. Soc. Chem. Comm. 1992, 1320-1321; Newkome, G.R.; Cardullo, F.; Constable, E.C.; Moorefield, C.N.; Cargill Thompson, A.M.W. J. Chem. Soc. Chem. Comm. 1993, 925-927; Jin, R.-H.; Aida, T.; Inoue, S. J. Chem. Soc. Chem. Comm. 1993, 1260-1262; Liao, Y.-H.; Moss, J.R. J. Chem. Soc. Chem. Comm. 1993, 1774-1777; Achar, S.; Puddephatt, R.J. J. Chem. Soc. Chem. Comm. 1994, 1895-1896; Dandliker, P.J.; Diederich, F.; Gross, M.; Knobler, C.B.; Louati, A.; Sanford, E.M. Angew. Chem. Int. Ed. Engl. 1994, 33, 1739-1742; Newkome, G.R.; Güther, R.; Moorefield, C.N.; Cardullo, F.; Echegoyen, L.; Pérez-Cordero, E.; Luftmann, H. Angew. Chem. Int. Ed. Engl. 1995, 34, 2023-2026; Campagna, S.; Denti, G,; Serroni, S.; Juris, A.; Venturi, M.; Ricevuto, V.; Balzani, V. Chem. Eur. J. 1995, 1, 211-221; Huck, W.T.S.; van Veggel, F.C.J.M.; Reinhoudt, D.N. Angew. Chem. Int. Ed. Engl. 1996, 35, 1213-1215; Constable, E.C.; Harverson, P.; Oberholzer, M. Chem. Commun. 1996, 1821-1822; Armspach, D.; Cattalini, M.; Constable, E.C.; Housecrof, C.F.; Phillips, D. Chem. Commun. 1996, 1823-1824; Lange, P.; Schier, A.; Schmidbaur, H. Inorg. Chem. 1996, 35, 637-642.
20. 6. For various other metal-containing dendritic structures, see: Constable, E.C.; Cargill Thompson A.M.W. J. Chem. Soc. Chem. Comm. 1992, 617-619; Fillaut, J.-L.; Astruc, D. J. Chem. Soc. Chem. Comm. 1992, 1320-1321; Newkome, G.R.; Cardullo, F.; Constable, E.C.; Moorefield, C.N.; Cargill Thompson, A.M.W. J. Chem. Soc. Chem. Comm. 1993, 925-927; Jin, R.-H.; Aida, T.; Inoue, S. J. Chem. Soc. Chem. Comm. 1993, 1260-1262; Liao, Y.-H.; Moss, J.R. J. Chem. Soc. Chem. Comm. 1993, 1774-1777; Achar, S.; Puddephatt, R.J. J. Chem. Soc. Chem. Comm. 1994, 1895-1896; Dandliker, P.J.; Diederich, F.; Gross, M.; Knobler, C.B.; Louati, A.; Sanford, E.M. Angew. Chem. Int. Ed. Engl. 1994, 33, 1739-1742; Newkome, G.R.; Güther, R.; Moorefield, C.N.; Cardullo, F.; Echegoyen, L.; Pérez-Cordero, E.; Luftmann, H. Angew. Chem. Int. Ed. Engl. 1995, 34, 2023-2026; Campagna, S.; Denti, G,; Serroni, S.; Juris, A.; Venturi, M.; Ricevuto, V.; Balzani, V. Chem. Eur. J. 1995, 1, 211-221; Huck, W.T.S.; van Veggel, F.C.J.M.; Reinhoudt, D.N. Angew. Chem. Int. Ed. Engl. 1996, 35, 1213-1215; Constable, E.C.; Harverson, P.; Oberholzer, M. Chem. Commun. 1996, 1821-1822; Armspach, D.; Cattalini, M.; Constable, E.C.; Housecrof, C.F.; Phillips, D. Chem. Commun. 1996, 1823-1824; Lange, P.; Schier, A.; Schmidbaur, H. Inorg. Chem. 1996, 35, 637-642.
21. 6. For various other metal-containing dendritic structures, see: Constable, E.C.; Cargill Thompson A.M.W. J. Chem. Soc. Chem. Comm. 1992, 617-619; Fillaut, J.-L.; Astruc, D. J. Chem. Soc. Chem. Comm. 1992, 1320-1321; Newkome, G.R.; Cardullo, F.; Constable, E.C.; Moorefield, C.N.; Cargill Thompson, A.M.W. J. Chem. Soc. Chem. Comm. 1993, 925-927; Jin, R.-H.; Aida, T.; Inoue, S. J. Chem. Soc. Chem. Comm. 1993, 1260-1262; Liao, Y.-H.; Moss, J.R. J. Chem. Soc. Chem. Comm. 1993, 1774-1777; Achar, S.; Puddephatt, R.J. J. Chem. Soc. Chem. Comm. 1994, 1895-1896; Dandliker, P.J.; Diederich, F.; Gross, M.; Knobler, C.B.; Louati, A.; Sanford, E.M. Angew. Chem. Int. Ed. Engl. 1994, 33, 1739-1742; Newkome, G.R.; Güther, R.; Moorefield, C.N.; Cardullo, F.; Echegoyen, L.; Pérez-Cordero, E.; Luftmann, H. Angew. Chem. Int. Ed. Engl. 1995, 34, 2023-2026; Campagna, S.; Denti, G,; Serroni, S.; Juris, A.; Venturi, M.; Ricevuto, V.; Balzani, V. Chem. Eur. J. 1995, 1, 211-221; Huck, W.T.S.; van Veggel, F.C.J.M.; Reinhoudt, D.N. Angew. Chem. Int. Ed. Engl. 1996, 35, 1213-1215; Constable, E.C.; Harverson, P.; Oberholzer, M. Chem. Commun. 1996, 1821-1822; Armspach, D.; Cattalini, M.; Constable, E.C.; Housecrof, C.F.; Phillips, D. Chem. Commun. 1996, 1823-1824; Lange, P.; Schier, A.; Schmidbaur, H. Inorg. Chem. 1996, 35, 637-642.
22. 7. Tzalis, D.; Tor, Y.; Failla, S.; Siegel, J.S. Tetrahedron Lett. 1995, 56, 3489-3490.
23. 8. Tzalis, D.; Tor, Y. Tetrahedron Lett. 1995, 36, 6017-6020.
24. 4).
25. 2 was not stable to column chromatography and has been used as obtained without further purification. The dendritic complexes showed spectroscopic data (UV-VIS, IR, NMR and MS) consistent with the assigned structures.