Beilstein J. Org. Chem.2015,11, 576–582, doi:10.3762/bjoc.11.63
sulfones.
Keywords: dimethyl acetylenedicarboxylate (DMAD); hetero-Diels–Alder reactions; highpressurereactions; methyl propiolate; thioketones; thiopyrans; Introduction
A series of recent publications evidence that, in contrast to earlier opinions, thioketones are useful building blocks for the
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Graphical Abstract
Scheme 1:
Hetero-Diels–Alder reaction of thiobenzophenone (1a) with dimethyl acetylenedicarboxylate (2a) [10].