An Alternative Synthysis of Thieno[3,4-b]Thiophene: Synthetic Communications: Vol 20, No 15

Synthetic Communications

An International Journal for Rapid Communication of Synthetic Organic Chemistry

Volume 20, 1990 - Issue 15

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Abstract

Thieno[3,4-b]thiophene has been obtained in greater than 50% yield starting from 3,4-dibromothiophene by a sequence of Pd^II-Cu^I-catalysed cross-coupling with trimethylsilylacetylene, bromine-lithium exchange, thiolation with elemental sulfur and ring-closure in aqueous medium.

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An Alternative Synthysis of Thieno[3,4-b]Thiophene

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An Alternative Synthysis of Thieno[3,4-b]Thiophene

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