Acylation of 5-amino-3H-1,3,4-thiadiazolin-2-one (2) was undertaken selectively at either the 3-NH position or at 5-amino group depending on reaction conditions. The 3-NH is highly acidic and acylation takes place with acid anhydrides at this position in
Ra, Do Young,Cho, Nam Sook,Cho, Jae Too
p. 525 - 530
(2007/10/03)
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