Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Reexamination Certificate
2007-06-12
2007-06-12
Page, Thurman K. (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
Reexamination Certificate
active
11247490
ABSTRACT:
The invention provides a process for preparing R-(+)-2-(4-hydroxyphenoxy)-2-methyl-butyric acid methyl ester of the formula (I):Various embodiments and variants are provided.The invention also provides a process for preparing S-(−)-2-(4-hydroxyphenoxy)-2-methyl-butyric acid methyl ester of the formula (II)Various embodiments and variants are provided.
REFERENCES:
Shi, Yao-Jun; Hughes, David L.; McNamara, James M Stereospecific synthesis of chiral tertiary alkylaryl ethers via Mitsunobu reaction with complete inversion of configuration. Tetrahedron Letters (2003), 44(18), 3609-3611.
Kumar Potlapally Rejender
Madhaven Gurram Ranga
Reddy Jangalgar Tirupathy
Reddy Velagala V. R. M. K.
Singh Sunil Kumar
Cepeda Milagros A.
Dr. Reddy's Laboratories Inc.
Dr. Reddy's Laboratories Limited
Franks Robert A.
Lao MLouisa
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