Tetrahedron p. 991 - 998 (1987)
Update date:2022-07-30
Topics:
Abarca, Belen
Ballesteros, Rafael
Soriano, Concepcion
Cycloaddition reactions between 2-(1-cyanoallyl)thiophen and the dienophiles diethyl azodicarboxylate, N-phenylmaleimide, methyl propiolate, and dimethyl acetylenedicarboxylate are reported.Products include simple benzothiophen carboxylates (13,19) and reduced derivatives (8,9,10,12,18), as a mixture of diastereoisomers, except in the adduct with diethyl azodicarboxylate.With dimethyl acetylenedicarboxylate a new type of tricyclic compound was also found (20).
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