Studies on polycyclic thiaarenes: Part II. An improved synthesis of phenanthro [1, 2??b] thiophene and a synthesis of acenaphtho [1, 2??b] naphtho??[2, 3??d] thiophene, a …

GK Kar, AC Karmakar, JK Ray

文献索引：Kar, Gandhi K.; Karmakar, Arun C.; Ray, Jayanta K. Journal of Heterocyclic Chemistry, 1991 , vol. 28, # 4 p. 999 - 1002

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被引用次数: 6

摘要

Abstract An improved synthesis of phenanthro [1, 2-b] thiophene (6) from 1-chloro-3, 4- dihydrophenanthrene-2-aldehyde (2) by condensation with thioglycolate followed by hydrolysis, decarboxylation and dehydrogenation is described. A new polycyclic thiophene derivative 14 has also been prepared from acenaphthothiophene (7) by Friedel-Craft's reaction with phthalic anhydride followed by lactonisation of the keto carboxylic acid 9 and ...