Photocycloaddition of chalcones to yield cyclobutyl ditopic cyclophanes

被引：19

作者：

Cibin, FR

Di Bello, N

Doddi, G

Fares, V

Mencarelli, P

Ullucci, E

机构：

[1] Univ Roma La Sapienza, Dipartimento Chim, I-00185 Rome, Italy

[2] Univ Roma La Sapienza, CNR, IMC, Sez Meccanismi Reaz, I-00185 Rome, Italy

[3] CNR, Area Ric Roma 1, Sez Monterondo, Ist Cristallog, I-00016 Monterotondo, Italy

来源：

TETRAHEDRON | 2003年 / 59卷 / 50期

关键词：

cyclophanes; enones; chalcones; carbocycles; cycloaddition; photochemistry; photocyclization;

D O I：

10.1016/j.tet.2003.10.026

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

The intramolecular photocycloaddition of chalcones to give cyclobutanes has proved to be a fast and convenient method to shrink a cyclophane ring to a tricyclic system, in order to prepare potential ditopic receptors. X-Ray results confirm the previously indicated structure for the cyclobutanes 2a (n=1, m=1), in which the cyclization occurs by a head-to-head syn ring closure. NMR results indicate that the same process occurs for the cyclobutanes 2b (n=2, m=2) and 2c (n=1, m=3). (C) 2003 Elsevier Ltd. All rights reserved.

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页码：9971 / 9978

页数：8

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