Chemistry: molecular biology and microbiology – Process of utilizing an enzyme or micro-organism to destroy... – Resolution of optical isomers or purification of organic...
Reexamination Certificate
2007-06-26
2007-06-26
Saucier, Sandra E. (Department: 1651)
Chemistry: molecular biology and microbiology
Process of utilizing an enzyme or micro-organism to destroy...
Resolution of optical isomers or purification of organic...
Reexamination Certificate
active
11028933
ABSTRACT:
The present invention provides a method for obtaining optically active 3-chloro-2-methyl-1,2-propanediol, the method comprising: a first step of letting at least one kind of microorganism or processed product thereof having an ability to leave untouched (R)-3-chloro-2-methyl-1,2-propanediol or (S)-3-chloro-2-methyl-1,2-propanediol in the presence of an enantiomeric 3-chloro-2-methyl-1,2-propanediol mixture act on an enantiomeric 3-chloro-2-methyl-1,2-propanediol mixture; and a second step of recovering the untouched optically active 3-chloro-2-methyl-1,2-propanediol.
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Kasai et al.,Industrialization of the Microbial Resolution of Chiral C3and C4Synthetic Units: From a Small Beginning to a Major Operation, a Personal Account, Advanced Synthesis & Catalysis, 345, No. 4, pp. 437-455, 2003.
Nakagawa Atsushi
Nakayama Satoshi
Nishikawa Kouji
Suzuki Keiko
Suzuki Toshio
Daiso Co. Ltd.
Saucier Sandra E.
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