Tetrahedron Letters p. 885 - 888 (1983)
Update date:2022-07-29
Topics:
Doepp, Dietrich
Libera, Hubert
With loss of the tert-butyl group, 2-tert-butyl-thioacrylonitrile (1) may be added thermally to N-phenyl maleic imide (2a), maleic anhydride (2b) and other olefins to yield tetrahydrothiophene-2-carbonitriles; from the addition to dimethyl ethyne dicarboxylate, the dihydrothiophene 7 is obtained.
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