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Volumn 119, Issue 24, 1997, Pages 5706-5712

NMR studies of the reversible dimerization and guest exchange processes of tetra urea calix[4]arenes using a derivative with lower symmetry

Author keywords

[No Author keywords available]

Indexed keywords

BENZENE; CALIXARENE; UREA;

EID: 0030818032     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja970078o     Document Type: Article
Times cited : (168)

References (42)
  • 17
    • 0030211067 scopus 로고    scopus 로고
    • For recent reviews on assembly and encapsulation with self-complementary molecules, see: (a) Rebek, Jr., J. Acta Chim. Scand. 1996, 50, 707-716. (b) Rebek, Jr., J. Pure Appl. Chem. 1996, 68, 1261-1266. (c) Rebek, Jr., J. Chem. Soc. Rev. 1996, 255-264.
    • (1996) Acta Chim. Scand. , vol.50 , pp. 707-716
    • Rebek Jr., J.1
  • 18
    • 0000699940 scopus 로고    scopus 로고
    • For recent reviews on assembly and encapsulation with self-complementary molecules, see: (a) Rebek, Jr., J. Acta Chim. Scand. 1996, 50, 707-716. (b) Rebek, Jr., J. Pure Appl. Chem. 1996, 68, 1261-1266. (c) Rebek, Jr., J. Chem. Soc. Rev. 1996, 255-264.
    • (1996) Pure Appl. Chem. , vol.68 , pp. 1261-1266
    • Rebek Jr., J.1
  • 19
    • 0030515326 scopus 로고    scopus 로고
    • For recent reviews on assembly and encapsulation with self-complementary molecules, see: (a) Rebek, Jr., J. Acta Chim. Scand. 1996, 50, 707-716. (b) Rebek, Jr., J. Pure Appl. Chem. 1996, 68, 1261-1266. (c) Rebek, Jr., J. Chem. Soc. Rev. 1996, 255-264.
    • (1996) Chem. Soc. Rev. , pp. 255-264
    • Rebek Jr., J.1
  • 20
    • 1842350441 scopus 로고    scopus 로고
    • note
    • The expressions "wide" and "narrow" rim are preferred to the somewhat ambiguous "upper" and "lower" rim.
  • 23
    • 0029831996 scopus 로고    scopus 로고
    • Urea functions have been also attached to the wider rim in order to obtain host molecules for anions: (a) Scheerder, J.; van Duynhoven, J. P. M.; Engbersen, J. F. J.; Reinhoudt, D. N. Angew. Chem., Int. Ed. Engl. 1996, 35, 1090-1093. (b) Scheerder, J.; Engbersen, J. F. J.; Casnati, A.; Ungaro, R.; Reinhoudt, D. N. J. Org. Chem. 1995, 60, 6448-6454. (c) Casnati, A.; Fochi, M.; Minari, P.; Pochini, A.; Reggiani, R.; Ungaro, R.; Reinhoudt, D. N. Gazz. Chim. Ital. 1996, 126, 99-106.
    • (1996) Angew. Chem., Int. Ed. Engl. , vol.35 , pp. 1090-1093
    • Scheerder, J.1    Van Duynhoven, J.P.M.2    Engbersen, J.F.J.3    Reinhoudt, D.N.4
  • 24
    • 33751154390 scopus 로고
    • Urea functions have been also attached to the wider rim in order to obtain host molecules for anions: (a) Scheerder, J.; van Duynhoven, J. P. M.; Engbersen, J. F. J.; Reinhoudt, D. N. Angew. Chem., Int. Ed. Engl. 1996, 35, 1090-1093. (b) Scheerder, J.; Engbersen, J. F. J.; Casnati, A.; Ungaro, R.; Reinhoudt, D. N. J. Org. Chem. 1995, 60, 6448-6454. (c) Casnati, A.; Fochi, M.; Minari, P.; Pochini, A.; Reggiani, R.; Ungaro, R.; Reinhoudt, D. N. Gazz. Chim. Ital. 1996, 126, 99-106.
    • (1995) J. Org. Chem. , vol.60 , pp. 6448-6454
    • Scheerder, J.1    Engbersen, J.F.J.2    Casnati, A.3    Ungaro, R.4    Reinhoudt, D.N.5
  • 25
    • 0002271243 scopus 로고    scopus 로고
    • Urea functions have been also attached to the wider rim in order to obtain host molecules for anions: (a) Scheerder, J.; van Duynhoven, J. P. M.; Engbersen, J. F. J.; Reinhoudt, D. N. Angew. Chem., Int. Ed. Engl. 1996, 35, 1090-1093. (b) Scheerder, J.; Engbersen, J. F. J.; Casnati, A.; Ungaro, R.; Reinhoudt, D. N. J. Org. Chem. 1995, 60, 6448-6454. (c) Casnati, A.; Fochi, M.; Minari, P.; Pochini, A.; Reggiani, R.; Ungaro, R.; Reinhoudt, D. N. Gazz. Chim. Ital. 1996, 126, 99-106.
    • (1996) Gazz. Chim. Ital. , vol.126 , pp. 99-106
    • Casnati, A.1    Fochi, M.2    Minari, P.3    Pochini, A.4    Reggiani, R.5    Ungaro, R.6    Reinhoudt, D.N.7
  • 27
    • 0000750315 scopus 로고
    • Cavitands derived from resorcarenes, which are widely used as building blocks for the synthesis of covalently linked carcerands may be also assembled via hydrogen bonds to carcerand-like capsules: Chapman, R. G.; Sherman, J. C. J Am. Chem. Soc. 1995, 117, 9081-9082.
    • (1995) J Am. Chem. Soc. , vol.117 , pp. 9081-9082
    • Chapman, R.G.1    Sherman, J.C.2
  • 29
    • 0028126723 scopus 로고
    • For the first example of a definite dimer formed between different calix[4]arenes substituted at the wider rim by pyridine and carboxylic acid functions no inclusion of guest molecules was reported. Kok, K.; Araki, K.; Shinkai, S. Tetrahedron Lett. 1994, 35, 8255-8258.
    • (1994) Tetrahedron Lett. , vol.35 , pp. 8255-8258
    • Kok, K.1    Araki, K.2    Shinkai, S.3
  • 33
    • 1842281435 scopus 로고    scopus 로고
    • note
    • The addition of small amounts of polar solvents to solutions in apolar solvents leads to the formation of monomeric species.
  • 34
    • 0029859437 scopus 로고    scopus 로고
    • Under similar conditions, also the monomeric form of the tetramethoxy urea derivative 1c exists only in the cone conformation, and a recently described "conformational control through self-assembly" could not be observed as such in our experiments. Compare: Castellano, R. K.; Rudkevich, D. M.; Rebek, Jr., J. J. Am. Chem. Soc. 1996, 118, 10002-10003.
    • (1996) J. Am. Chem. Soc. , vol.118 , pp. 10002-10003
    • Castellano, R.K.1    Rudkevich, D.M.2    Rebek Jr., J.3


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.