Synthesis of 3,4-bis[(methoxycarbonyl)methyl]thiophene and bis-, ter- and pentathiophenes with alternating 3,4-bis[(methoxycarbonyl)methyl]-substituted rings
摘要:
The synthesis of 3,4-bis[(methoxycarbonyl)methyl]thiophene and bis-, ter- and pentathiophenes, with alternating 3,4-bis(methoxycarbonyl)methyl-substituted rings, is reported, These new thiophene derivatives are possible precursors for the preparation of new conducting polymers useful as materials for electronics. (C) 1998 Elsevier Science Ltd. All rights reserved.
A facile, efficient, and general synthetic method for the construction of 3,4-diiododihydrothiophenes has been developed via the electrophilic iodocyclization of various S-hydroxy-2-butynyl ethanethioates. Application of the resulting iodine-containing products in organic transformations has been investigated.