Reactivities of stable rotamers. XXIV. Formation of isomeric ketones by cyclization of rotameric 3-methyl-3-(1, 2, 3, 4-tetrahalo-9-triptycyl) butanoyl chloride and …

M Oki, T Tanuma, Y Tanaka, G Yamamoto

Index: Yamomoto, Gaku; Oki, Michinori Bulletin of the Chemical Society of Japan, 1985 , vol. 58, # 6 p. 1690 - 1695

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Citation Number: 10

Abstract

Rotational isomers of 3-methyl-3-(1, 2, 3, 4-tetrahalo-9-triptycyl) butanoic acid, where the halo is either fluoro or chloro have been prepared. Cyclization of their acid chlorides afforded ap-and sc-ketones from ap-and sc-isomers, respectively. The barriers to