Journal of Organic Chemistry p. 1048 - 1051 (1989)
Update date:2022-08-05
Topics:
Cooley, James H.
Evain, Eric J.
Willett, Roger D.
Blanchette, Joan T.
Reaction of excess phosgene with 1,1-dimethyl-4-phenylsemicarbazide, 3, gave 3-chloro-1-methyl-4-phenyl-Δ2-1,2,4-triazolin-5-one, 4.An investigation into the reaction pathway led to the surprising find that when 1 equiv of phosgene was allowed
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