- Carbonic acid esters, and the preparation thereof and their use
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Carbonic acid esters of the formula substituent(s) substituents(s) wherein R'1 is lower alkyl which may have substituent)s) selected from the group of halogen, lower alkoxy and aryloxy, or ar(lower)-alkyl which may have substituents)s) selected from the group of lower alkoxy, halogen, nitro and cyano, and R'2 is benzotriazolyl which may have halogen; or a group represented by the formula: STR1 wherein Y' and Z' are each cyano, nitro, carbamoyl, esterified carboxy, lower alkanoyl, aroyl or disubstituted carbamoyl; provided that when R'2 is a group represented by the formula: STR2 wherein Y' and Z' are each cyano, nitro, carbamoyl or esterified carboxy, R'1 is ar(lower) alkyl having substituent(s) selected from the group of lower alkoxy, halogen, nitro and cyano. A process for the protection of amino and/or imino groups in compounds containing them by reacting them with the aforementioned esters is also disclosed.
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- Oxime carbonates
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Novel carbonic acid esters are disclosed which are useful in a process for introducing esterified carboxy-type protective groups on amino and/or imino groups in amino and/or imino group - containing compounds for the temporary protection of said amino and/or imino groups. Additionally, processes for preparing said esters are also disclosed.
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