Iminophosphorane-Mediated Annulation of 1,3,5-Triazine to Benzimidazole: Synthesis of 1,3,5-Triazino[1,2-a]benzimidazoles
- 1 January 1992
- journal article
- research article
- Published by Georg Thieme Verlag KG in Synthesis
- Vol. 1992 (03) , 297-302
- https://doi.org/10.1055/s-1992-26096
Abstract
A number of 1,3,5-triazino[1,2-a]benzimidazoles 5 and 7 have been prepared by aza-Wittig-type reaction of 2-(triphenylphosphoranylideneamino)benzimidazoles 2 and 6, which were derived from 2-aminobenzimidazoles, with isocyanates under neutral conditions.Keywords
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