| 摘要 |
A process for the preparation of a carbamate of formula (1): in which R2 is a C1-6 alkyl group, optionally substituted by halogen, a C3-6 cycloalkyl group, aralkyl or optionally substituted aryl group; comprises reacting a solution of a compound of formula (2) in which R1 is an alkyl, arylalkyl or alkynyl group; at a temperature in the range of 50-100° C. with a haloformate of formula Hal-CO2R2.
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