1085541-60-1Relevant articles and documents
PROCESSES FOR THE PREPARATION OF SOLIFENACIN OR A SALT THEREOF
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Page/Page column 12; 13, (2011/05/06)
The present invention describes recovery and racemization of (1R)-Phenyl- 1,2,3,4-tetrahydroisoquinoline of compound of formula (III) to obtain racemic 1- phenyl-1, 2,3,4-tetrahydroisoquinoline of compound of formula (I) and its further resolution to get ( IS)-1-phenyl-1, 2, 3, 4-tetrahydroisoquinoline (intermediate B) in high chemical and chiral purity, which is the key intermediate for the preparation of (3R)-azabicyclo[2.2.2]oct-3-yl (1S)-1-phenyl-3,4-dihydroisoquinoline-2-(1H)- carboxylate.