Creation of concave-shaped conformation in crystal structures using an iminodicarbonyl linker. An application to solid-state intramolecular [4+ 4] photocycloaddition …

H Masu, K Ohmori, K Kishikawa, M Yamamoto…

Index: Masu, Hyuma; Ohmori, Ken; Kishikawa, Keiki; Yamamoto, Makoto; Yamaguchi, Kentaro; Kohmoto, Shigeo Bulletin of the Chemical Society of Japan, 2005 , vol. 78, # 6 p. 1127 - 1131

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Citation Number: 4

Abstract

Single-crystal X-ray structures of 6 carboxamides possessing two units of 2-pyridone moieties connected with an iminodicarbonyl linker were examined to show the usefulness of this linker for the creation of concave-shaped conformation in crystal structures. In all cases, the carboxamides showed concave-shaped conformations in which two 2-pyridone moieties faced each other. Their solid-state [4+ 4] photocycloaddition was carried out, and their ...