| 摘要 |
<p>A process and novel carbonic acid ester for the protection of amino and ?mino groups in amino and imino group - containing compounds is provided; the process comprises reacting an amino or imino group - containing compound with a crabonic acid ester of the formula: F1OCOOR2 wherein R1 is a lower alkyl which may have one or more substituents selected from the group of halogen, lower alkoxy and aryloxy, or ar(lower)-alkyl which may be unsubstituted or substituted with a substituant selected from the group of lower alkoxy ha??gen, nitro and cyano, and R2 is a group represented by the formula: wherein Y is aryl which may have substitutent(s) selected from the group of halogen, lower alkoxy, nitro cyano and halo(lower)alkyl, or an elctron withdrawing group and Z is aryl which may have substituents(s) selected from the group of halogen, lower alkoxy, nitro, cyano and halo(lower) alkyl.</p> |
