Journal of Heterocyclic Chemistry p. 1019 - 1024 (1996)
Update date:2022-08-02
Topics:
Lee, Chang Kiu
Kim, Sun Hee
Kim, Yong Bun
Reactions of benzils and urea in ethylene glycol at 180° for 1-2 hours gave 2,4,5-triaryloxazoles as major products and bicyclic imidazoimidazole-2,5-diones as minor products. N-Methylurea and W-phenylurea gave the oxazoles under similar conditions. The solvent seemed to assist the formation of oxazole by eliminating the isocyanate components as ethylene glycol biscarbamates.
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Doi:10.1016/0040-4020(96)00258-X
(1996)Doi:10.1002/jhet.5570330220
(1996)Doi:10.1002/cber.19961290612
(1996)Doi:10.1021/jo501465q
(2014)Doi:10.1023/B:DOCH.0000010333.98677.c6
(2003)Doi:10.1002/anie.201108267
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