Journal of Organic Chemistry p. 5130 - 5136 (1980)
Update date:2022-08-05
Topics:
Tsuge, Otohiko
Urano, Satoshi
Oe, Koji
Trimethylsilyl azide (TMSA) reacted with aryl isocyanates to give arylcarbamoyl azides, 1-aryl-5(4H)-tetrazolinones, and / or 1-aryl-4-(arylcarbamoyl)-5(4H)-tetrazolinones, whose yields were dependent on the reaction conditions.The reaction between TMSA and benzoyl or thiobenzoyl isocyanates provides a facile method for the preparation of 5-aryl-3-hydroxy-1,2,4-oxadiazoles or -1,2,4-thiadiazoles, respectively.However, with phenyl or benzoyl isothiocyanate, 1-anilino-1,2,3,4-thiatriazole or benzoylcyanamide was obtained in low yield, respectively.TMSA reacted with carbodiimides to afford the corresponding 5-aminotetrazoles.Tetraphenylsuccinimide, N-(diphenylacetyl)tetraphenylsuccinimide, 1,3-bis(diphenylmethyl)urea, and / or benziloylamide were obtained from the reaction of TMSA with diphenyl ketene.The pathways for the formation of the above products are also described.
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