121175-18-6Relevant academic research and scientific papers
PROCESSES FOR PRODUCING AND PURIFYING ASPARTAME DERIVATIVES AND PROCESS FOR PRODUCING PRODUCTION INTERMEDIATES
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, (2008/06/13)
There are provided a process for producing an N-[N-[3-(2-hydroxy-substituted phenyl)propyl]-L-α-aspartyl]-L-phenylalanine 1-methyl ester derivative, which is useful as a sweetener, by subjecting a 2-hydroxychroman derivative having various substituents in a benzene ring and an aspartame to a reductive alkylation reaction, and a process for purifying the same by subjecting such derivative containing impurity(ies) to a crystallization step to crystallize the same. Further, there are provided a process for producing a dialkoxychroman derivative useful as a production intermediate for the above aspartame derivative in the above process, and novel dialkoxychroman derivatives thus produced, and excellent as the production intermediate.
