-
1
-
-
0000491602
-
-
For a recent review on chiral dendritic catalysts and chiral dendrimers, see: D. Seebach, P. B. Rheiner, G. Greiveldinger, T. Butz, H. Sellner, Top. Curr. Chem. 1998, 197, 125.
-
(1998)
Top. Curr. Chem.
, vol.197
, pp. 125
-
-
Seebach, D.1
Rheiner, P.B.2
Greiveldinger, G.3
Butz, T.4
Sellner, H.5
-
2
-
-
0030767579
-
-
H. W. I. Peerlings, E. W. Meijer, Chem. Eur. J. 1997, 3, 1563; M. S. T. H. Sanders-Hovens, J. F. G. A. Jansen, J. A. J. M. Vekemans, E. W. Meijer, Polym. Mater. Sci. Eng. 1995, 73, 338.
-
(1997)
Chem. Eur. J.
, vol.3
, pp. 1563
-
-
Peerlings, H.W.I.1
Meijer, E.W.2
-
3
-
-
0000369922
-
-
H. W. I. Peerlings, E. W. Meijer, Chem. Eur. J. 1997, 3, 1563; M. S. T. H. Sanders-Hovens, J. F. G. A. Jansen, J. A. J. M. Vekemans, E. W. Meijer, Polym. Mater. Sci. Eng. 1995, 73, 338.
-
(1995)
Polym. Mater. Sci. Eng.
, vol.73
, pp. 338
-
-
Sanders-Hovens, M.S.T.H.1
Jansen, J.F.G.A.2
Vekemans, J.A.J.M.3
Meijer, E.W.4
-
4
-
-
0007232798
-
-
D. Seebach, R. E. Marti, T. Hintermann, Helv. Chim. Acta 1996, 79, 1710.
-
(1996)
Helv. Chim. Acta
, vol.79
, pp. 1710
-
-
Seebach, D.1
Marti, R.E.2
Hintermann, T.3
-
5
-
-
0031584590
-
-
T. Suzuki, Y. Hirokawa, K. Ohtake, T. Shibata, K. Soai, Tetrahedron Asymmetry 1997, 8, 4033.
-
(1997)
Tetrahedron Asymmetry
, vol.8
, pp. 4033
-
-
Suzuki, T.1
Hirokawa, Y.2
Ohtake, K.3
Shibata, T.4
Soai, K.5
-
7
-
-
0028260772
-
-
H. Brunner, J. Fürst, Tetrahedron 1994, 50, 4303; H. Brunner, S. Altmann, Chem. Ber. 1994, 127, 2285.
-
(1994)
Tetrahedron
, vol.50
, pp. 4303
-
-
Brunner, H.1
Fürst, J.2
-
8
-
-
84989483164
-
-
H. Brunner, J. Fürst, Tetrahedron 1994, 50, 4303; H. Brunner, S. Altmann, Chem. Ber. 1994, 127, 2285.
-
(1994)
Chem. Ber.
, vol.127
, pp. 2285
-
-
Brunner, H.1
Altmann, S.2
-
9
-
-
85034543799
-
-
note
-
In ref. [2], Meijer et al. describe the catalysis with different generations of poly(propylene imine) dendrimers which carry chiral amino alcohol moieties on their periphery. Due to interactions between the amino alcohol moieties and due to crowding on the surface of the dendrimers, the selectivities of these catalysts decrease with increasing size of the catalyst. Even though interactions within the catalyst molecules could be decreased by use of a different amino alcohol, the crowding effect still prevented good reaction selectivities.
-
-
-
-
10
-
-
0028042356
-
-
J. F. G. A. Jansen, E. M. M. de Brabander-van den Berg, E. W. Meijer, Science 1994, 266, 1226; J. F. G. A. Jansen, H. W. I. Peerlings, E. M. M. de Brabander-van den Berg, E. W. Meijer, Angew. Chem. 1995, 107, 1321; Angew. Chem. Int. Ed. Engl. 1995, 34, 1206. With their work on dendritic boxes, Meijer et al. demonstrate a selective inclusion of organic molecules inside a poly(propylene imine) dendrimer with the densely packed surface groups preventing the release of the molecules.
-
(1994)
Science
, vol.266
, pp. 1226
-
-
Jansen, J.F.G.A.1
De Brabander-Van Den Berg, E.M.M.2
Meijer, E.W.3
-
11
-
-
0028042356
-
-
J. F. G. A. Jansen, E. M. M. de Brabander-van den Berg, E. W. Meijer, Science 1994, 266, 1226; J. F. G. A. Jansen, H. W. I. Peerlings, E. M. M. de Brabander-van den Berg, E. W. Meijer, Angew. Chem. 1995, 107, 1321; Angew. Chem. Int. Ed. Engl. 1995, 34, 1206. With their work on dendritic boxes, Meijer et al. demonstrate a selective inclusion of organic molecules inside a poly(propylene imine) dendrimer with the densely packed surface groups preventing the release of the molecules.
-
(1995)
Angew. Chem.
, vol.107
, pp. 1321
-
-
Jansen, J.F.G.A.1
Peerlings, H.W.I.2
De Brabander-Van Den Berg, E.M.M.3
Meijer, E.W.4
-
12
-
-
33748224868
-
-
J. F. G. A. Jansen, E. M. M. de Brabander-van den Berg, E. W. Meijer, Science 1994, 266, 1226; J. F. G. A. Jansen, H. W. I. Peerlings, E. M. M. de Brabander-van den Berg, E. W. Meijer, Angew. Chem. 1995, 107, 1321; Angew. Chem. Int. Ed. Engl. 1995, 34, 1206. With their work on dendritic boxes, Meijer et al. demonstrate a selective inclusion of organic molecules inside a poly(propylene imine) dendrimer with the densely packed surface groups preventing the release of the molecules.
-
(1995)
Angew. Chem. Int. Ed. Engl.
, vol.34
, pp. 1206
-
-
-
13
-
-
85034562897
-
-
note
-
In ref. [4], Soai et al. describe the catalysis with ephedrine derivatives attached to poly(amido amine) dendrimers. The selectivity of the catalyzed reaction decreases rapidly with increasing size of the dendrimer used (even in lower generations). The authors explain this effect with interactions between the ephedrine units. It is, however, also possible that the loss of selectivity results from interactions with the polar dendritic branches.
-
-
-
-
14
-
-
85034545967
-
-
note
-
In ref. [6], Brunner et al. describe very poor selectivities of reactions catalyzed by achiral catalytic sites with chiral dendritic branches. To the best of our knowledge, no other work has yet been published on the influence of dendritic branches on a catalytically active core.
-
-
-
-
15
-
-
0000057715
-
-
(Ed.: L. Paquette), Wiley, Chichester
-
For short review articles, see: R. Dahinden, A. K. Beck, D. Seebach, in Encyclopedia of Reagents for Organic Synthesis, Vol. 3 (Ed.: L. Paquette), Wiley, Chichester, 1995, p. 2167.
-
(1995)
Encyclopedia of Reagents for Organic Synthesis
, vol.3
, pp. 2167
-
-
Dahinden, R.1
Beck, A.K.2
Seebach, D.3
-
16
-
-
0000394987
-
-
For a first preliminary account see: P. B. Rheiner, H. Sellner, D. Seebach, Helv. Chim. Acta 1997, 80, 2027; P. B. Rheiner, D. Seebach, Polym. Mater. Sci. Eng. 1997, 77, 130.
-
(1997)
Helv. Chim. Acta
, vol.80
, pp. 2027
-
-
Rheiner, P.B.1
Sellner, H.2
Seebach, D.3
-
17
-
-
0000394987
-
-
For a first preliminary account see: P. B. Rheiner, H. Sellner, D. Seebach, Helv. Chim. Acta 1997, 80, 2027; P. B. Rheiner, D. Seebach, Polym. Mater. Sci. Eng. 1997, 77, 130.
-
(1997)
Polym. Mater. Sci. Eng.
, vol.77
, pp. 130
-
-
Rheiner, P.B.1
Seebach, D.2
-
18
-
-
0000389195
-
-
D. Seebach, D. A. Plattner, A. K. Beck, Y. M. Wang, D. Hunziker, W. Petter, Helv. Chim. Acta 1992, 75, 2171.
-
(1992)
Helv. Chim. Acta
, vol.75
, pp. 2171
-
-
Seebach, D.1
Plattner, D.A.2
Beck, A.K.3
Wang, Y.M.4
Hunziker, D.5
Petter, W.6
-
19
-
-
85034547681
-
-
note
-
For a dendrimer with peripheral TADDOL units, see ref. [3].
-
-
-
-
22
-
-
33845378981
-
-
G. R. Newkome, Z.-Q. Yao, G. R. Baker, V. K. Gupta, J. Org. Chem. 1985, 50, 2003.
-
(1985)
J. Org. Chem.
, vol.50
, pp. 2003
-
-
Newkome, G.R.1
Yao, Z.-Q.2
Baker, G.R.3
Gupta, V.K.4
-
23
-
-
0029738906
-
-
S. Stevelmans, J. C. M. van Hest, J. F. G. A. Jansen, D. A. F. J. van -Boxtel, E. M. M. de Brabander-van den Berg, E. W. Meijer, J. Am. Chem. Soc. 1996, 118, 7398.
-
(1996)
J. Am. Chem. Soc.
, vol.118
, pp. 7398
-
-
Stevelmans, S.1
Van Hest, J.C.M.2
Jansen, J.F.G.A.3
Van Boxtel, D.A.F.J.4
De Brabander-Van Den Berg, E.M.M.5
Meijer, E.W.6
-
24
-
-
0000001227
-
-
The same type of branches of up to the third generation have been independently prepared by another group: Z. Bo, X. Zhang, X. Yi, M. Yang, J. Shen, Y. Rehn, S. Xi, Polymer Bulletin 1997, 38, 257.
-
(1997)
Polymer Bulletin
, vol.38
, pp. 257
-
-
Bo, Z.1
Zhang, X.2
Yi, X.3
Yang, M.4
Shen, J.5
Rehn, Y.6
Xi, S.7
-
25
-
-
0028272208
-
-
D. Seebach, A. K. Beck, B. Schmidt, Y. M. Wang, Tetrahedron 1994, 50, 4363.
-
(1994)
Tetrahedron
, vol.50
, pp. 4363
-
-
Seebach, D.1
Beck, A.K.2
Schmidt, B.3
Wang, Y.M.4
-
26
-
-
0001570290
-
-
A. K. Beck, B. Bastani, D. A. Plattner, W. Petter, D. Seebach, H. Braunschweiger, P. Gysi, L. LaVecchia, Chimia 1991, 45, 238.
-
(1991)
Chimia
, vol.45
, pp. 238
-
-
Beck, A.K.1
Bastani, B.2
Plattner, D.A.3
Petter, W.4
Seebach, D.5
Braunschweiger, H.6
Gysi, P.7
LaVecchia, L.8
-
27
-
-
0032520401
-
-
D. C. Reiber, R. S. Brown, S. Weinberger, J. Kenny, J. Bailey, Anal. Chem. 1998, 70, 1214.
-
(1998)
Anal. Chem.
, vol.70
, pp. 1214
-
-
Reiber, D.C.1
Brown, R.S.2
Weinberger, S.3
Kenny, J.4
Bailey, J.5
-
28
-
-
84987280189
-
-
D. Seebach, J.-M. Lapierre, G. Greiveldinger, K. Skobridis, Helv. Chim. Acta 1994, 77, 1673.
-
(1994)
Helv. Chim. Acta
, vol.77
, pp. 1673
-
-
Seebach, D.1
Lapierre, J.-M.2
Greiveldinger, G.3
Skobridis, K.4
-
29
-
-
0346198757
-
-
For an investigation of the influence of chiral building blocks on the optical activity of dendritic poly(benzyl ether) branches, see: D. M. Junge, D. V. McGrath, Polym. Mater. Sci. Eng. 1997, 77, 154.
-
(1997)
Polym. Mater. Sci. Eng.
, vol.77
, pp. 154
-
-
Junge, D.M.1
McGrath, D.V.2
-
30
-
-
0030750239
-
-
II complexes to catalyze Diels - Alder reactions, Chow et al. also found a big difference in activity when going from the second to the third generation: H.-F. Chow, C. C. Mak, J. Org. Chem. 1997, 62, 5116.
-
(1997)
J. Org. Chem.
, vol.62
, pp. 5116
-
-
Chow, H.-F.1
Mak, C.C.2
-
31
-
-
84987486409
-
-
D. Seebach, J.-M. Lapierre, W. Jaworek, P. Seiler, Helv. Chim. Acta 1993, 76, 459; J.-M. Lapierre, K. Skobridis, D. Seebach, Helv. Chim. Acta 1993, 76, 2419.
-
(1993)
Helv. Chim. Acta
, vol.76
, pp. 459
-
-
Seebach, D.1
Lapierre, J.-M.2
Jaworek, W.3
Seiler, P.4
-
32
-
-
84987472635
-
-
D. Seebach, J.-M. Lapierre, W. Jaworek, P. Seiler, Helv. Chim. Acta 1993, 76, 459; J.-M. Lapierre, K. Skobridis, D. Seebach, Helv. Chim. Acta 1993, 76, 2419.
-
(1993)
Helv. Chim. Acta
, vol.76
, pp. 2419
-
-
Lapierre, J.-M.1
Skobridis, K.2
Seebach, D.3
-
33
-
-
0002066592
-
-
D. Seebach, A. K. Beck, R. Breitschuh, K. Job, Org. Synth. 1992, 71, 39.
-
(1992)
Org. Synth.
, vol.71
, pp. 39
-
-
Seebach, D.1
Beck, A.K.2
Breitschuh, R.3
Job, K.4
-
34
-
-
0001166301
-
-
J. Ehrler, F. Giovanni, B. Lamatsch, D. Seebach, Chimia 1986, 40, 172.
-
(1986)
Chimia
, vol.40
, pp. 172
-
-
Ehrler, J.1
Giovanni, F.2
Lamatsch, B.3
Seebach, D.4
-
36
-
-
85034531407
-
-
The amounts of the previously mentioned by-products resulting from fivefold coupling were not determined
-
The amounts of the previously mentioned by-products resulting from fivefold coupling were not determined.
-
-
-
-
37
-
-
84950276677
-
-
VCH, Weinheim
-
H. B. Bürgi, J. D. Dunitz, in Structure Correlation, Vols. 1 and 2, VCH, Weinheim, 1994.
-
(1994)
Structure Correlation
, vol.1-2
-
-
Bürgi, H.B.1
Dunitz, J.D.2
-
38
-
-
0003728654
-
-
Van Nostrand Reinhold, New York
-
S. N. Vinogradov, R. H. Linnell, in Hydrogen Bonding, Van Nostrand Reinhold, New York, 1987, p. 176.
-
(1987)
Hydrogen Bonding
, pp. 176
-
-
Vinogradov, S.N.1
Linnell, R.H.2
-
39
-
-
0030909212
-
-
The X-ray structure of a similar second-generation branch with benzylic groups at the periphery has been described previously and shows a planar array of the molecules: B. Karakaya, W. Claussen, K. Gessler, W. Saenger, A.-D. Schlüter, J. Am. Chem. Soc. 1997, 119, 3296.
-
(1997)
J. Am. Chem. Soc.
, vol.119
, pp. 3296
-
-
Karakaya, B.1
Claussen, W.2
Gessler, K.3
Saenger, W.4
Schlüter, A.-D.5
|