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PROCESS FOR PREPARING MONO-, BI- AND TRICYCLIC AMINO ACIDS, INTERMEDIATES OF THIS PROCESS, AND A PROCESS FOR PREPARING SAME
PROCESS FOR PREPARING MONO-, BI- AND TRICYCLIC AMINO ACIDS, INTERMEDIATES OF THIS PROCESS, AND A PROCESS FOR PREPARING SAME
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机译：制备单价，双价和三价氨基酸的过程，该过程的中间体以及相同的制备过程
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摘要
The invention relates to a process for preparing compounds of the formula I IMAGE I in which R stands for hydrogen, alkyl or aralkyl and R1 to R5 are identical or different radicals, (substituted) alkyl, cycloalkyl or (substituted) aryl or in which the pairs of radicals R1 and R2, R2 and R3, and R4 and R5 together with the carbon atom(s) supporting them form a mono- or bicyclic ring system and the other radicals are hydrogen, by treating a compound of the formula II IMAGE II in which R and R1 and R5 have the abovementioned meaning and R6 and R7 denote alkyl or aralkyl or together with the nitrogen atom supporting them form a heterocycle which can additionally contain an oxygen atom, with a reducing agent.
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