Synthesis of Carbo??and Heterocyclic Cycloprop [f] indenes via cycloaddition of dienes to cyclopropenes
P Müller, Z Miao
Index: Mueller, Paul; Miao, Zhongshan Helvetica Chimica Acta, 1994 , vol. 77, # 7 p. 1826 - 1836
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Citation Number: 9
Abstract
Abstract The heterocyclic cycloprop [f] indene 19 was synthesized via cycloaddition of diene 10 to the cyclopropene 11a and subsequent base-induced aromatization. While 19 is isolable, although very short-lived, the oxa analogue 18 decomposed under the conditions required for its preparation. The difluoro derivatives 14 and 15, in which the heterocyclic moiety is saturated, are accessible by the cycloaddition approach, but the corresponding ...
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