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The Synthesis of 4,6-Dihydrothieno[3,4-b]thiophene

โœ Scribed by MacDowell, D. W. H.; Patrick, Timothy B.


Book ID
111671755
Publisher
American Chemical Society
Year
1966
Tongue
English
Weight
538 KB
Volume
31
Category
Article
ISSN
0022-3263

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The generation of 2,3-dihydro-2,3-bis-(m
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On heating in sulpholane 4,6-dihydrothieno[3,4-blthiophene 5,5-dioxides give 2,3dihydro-2,3-bis(methylene)thiophenes which can be intercepted in Diels-Alder reactions. Sulphur dioxide is a very efficient trap for these thiophene xylylenes giving the cyclic sulphones by cheletropic addition.