Heterocyclic Communications p. 321 - 324 (2002)
Update date:2022-08-04
Topics:
Geffken, Detlef
Zilz, Sandra
The novel title compounds 2A/B are readily prepared by cyclic (thio)carbonylation of 1,4-disubstituted 4-hydroxysemicarbazides (3) with either diphosgene or thiophosgene.
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