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The Pd-catalyzed α-arylation of cycloheptapyridyl ketone is a key complexity-building step in the synthesis of BMS-846372, a CGRP antagonist. A first-generation process utilized Pd(OAc) 2 /P t Bu 3 ·HBF 4 catalyst system with a strong base NaO t Bu. Although this process was demonstrated on multi-kilo scale, the harsh conditions led to non-selective metal catalyzed...
The suitability of the Eksigent Express 800 microfluidic eight-channel HPLC instrument for multiparallel normal-phase chiral analysis in support of high-throughput pharmaceutical process research was investigated. Analysis of test mixtures containing the two enantiomers of benzoin and the closely related (R,S)-dihydrobenzoin, was carried out in a 96-well microplate, affording rapid (<2h) and accurate...
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