Tetrahedron

Azulenes and related substances—XIV: Synthesis of some benzotropylium salts and benzotropones

KC Srivastava, S Dev

Index: Srivastava,K.C.; Dev,S. Tetrahedron, 1972 , vol. 28, p. 1083 - 1091

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Citation Number: 14

Abstract

In connection with the synthesis of system 1, preparation of certain benzotropylium salts and benzotropones has been investigated. Action of NBS on benzocycloheptatriene yielded 1, 2- benzo-1, 3, 5-cycloheptatrien-7-yl-N-succinimide, a ready substrate for benzotropylium ion generation. Selenium dioxide oxidation of benzocycloheptatriene yielded both 2, 3- benzotropone and 4, 5-benzotropone. Similar oxidation of 4′-methoxy-1, 2-benzo-1, 3, 5- ...