1001067-10-2Relevant articles and documents
Development of column-free alkoxycarbonyl, aryloxycarbonyl, and acyl transfer reagents
Shimizu, Mamoru,Sodeoka, Mikiko
experimental part, p. 1301 - 1312 (2009/07/05)
Easy-to-handle alkoxycarbonyl, aryloxycarbonyl, and acyl transfer reagents, which contain 3-nitro-1,2,4-triazole (NT) as a leaving group, were developed. With these reagents (NT reagents), which are stable nonhygroscopic crystalline materials, the reactions can be accomplished in about 5 min, and product can be isolated without tedious column chromatographic purification.
Convenient method for the preparation of carbamates, carbonates, and thiocarbonates
Shimizu, Mamoru,Sodeoka, Mikiko
, p. 5231 - 5234 (2008/09/17)
(Chemical Equation Presented) A convenient, rapid, and efficient method for the preparation of carbamates from amines with 1-alkoxycarbonyl-3-nitro-1,2,4- triazole transfer reagents is reported. Reactions of newly synthesized stable crystalline reagents with alkyl amines were completed in a few minutes without any additional base, and highly pure carbamates were obtained without chromatographic purification. These highly active reagents are also useful for the selective protection of nucleobases and preparation of carbonates and thiocarbonates.