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Novel and efficient one-pot synthesis of azuleno[1,2-b]-benzothiophenic enones from the corresponding 2-cycloheptatrientyl-3-(2-furyl)benzothiophenes

✍ Scribed by Yuuko Houda; Misako Sasabe; Xu Bo; Hideki Takagi; Kimiaki Yamamura

Publisher: Journal of Heterocyclic Chemistry
Year: 2000
Tongue: English
Weight: 200 KB
Volume: 37
Category: Article
ISSN: 0022-152X
DOI: 10.1002/jhet.5570370559

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✦ Synopsis

Abstract

2‐Cycloheptatrienyl‐3‐(2‐furyl)benzothiophenes, which are prepared by Stille coupling reaction of 2‐cyclo‐heptatrienyl‐3‐bromobenzothiophene with the 5‐substituted 2‐trimethylstannylfurans, react with triphenylmethyl tetrafluoroborate to give the corresponding azuleno[1,2‐b]benzothiophenic enones in excellent yields.

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