| CPC C07D 249/04 (2013.01) [C07C 51/09 (2013.01); C07C 51/12 (2013.01); C07C 51/29 (2013.01); C07D 233/60 (2013.01); C07D 401/04 (2013.01)] | 23 Claims |
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1. A method of making a compound of Formula (VII), or a stereoisomer or a salt thereof:
![]() wherein Ra is —N(C1-4 alkyl)2,
comprising contacting a compound of Formula (VIII) or a salt thereof:
![]() in presence of
![]() and a co-catalyst selected from
![]() and 4-DMAP, with or without an aqueous base, in Solvent 5 that is a nonpolar solvent, or a solvent mixture thereof;
for a time and at a temperature sufficient for reaction completion to produce the compound of Formula (VII) or a stereoisomer or a salt thereof.
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