Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Reexamination Certificate
2007-05-01
2007-05-01
Parsa, J. (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
C560S311000, C560S312000, C564S162000
Reexamination Certificate
active
10541527
ABSTRACT:
The invention relates to a method for preparing methyl 2-diphenylmethylsulfinylacetate (MDMSA) comprising the steps of: (i) conversion of benzhydrol into methyldiphenylmethylthioacetate (MDMTA); and (ii) conversion of methyldiphenylmethylthioacetate (MDMTA) into methyl-2-diphenylmethylsulfinylacetate by oxidation, according to the following sequence: benzhydrol→MDMTA→MDMSA.
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Klein Dominique
Rose Sébastien
Cephalon France
Parsa J.
Woodcock & Washburn LLP
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