Synthesis of Imidazol-2-ylidenes by Reduction of Imidazole-2(3H)-thiones
- 1 January 1993
- journal article
- research article
- Published by Georg Thieme Verlag KG in Synthesis
- Vol. 1993 (06) , 561-562
- https://doi.org/10.1055/s-1993-25902
Abstract
An improved synthesis of the title compounds is reported. Reaction of the N,N-dialkylthioureas 1 with 3-hydroxy-2-butanone gives the imidazole-2(3H)-thiones 2 which on treatment with potassium in boiling tetrahydrofuran give the imidazol-2-ylidenes 3 in excellent yields.Keywords
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