3-Chloro-4-(methoxycarbonyl)benzeneboronic acid → 3,3'-Dichloro-4'-[3,3,3-trifluoro-2-hydroxy-1-methyl-2-(4-methyl-3-oxo-3,4-dihydro-2H-benzo[1,4]oxazin-6-yl)-propyl]-biphenyl-4-carboxylic acid methyl ester

Participants

Reaction Steps

In analogy to Example 17, step 2, 6-[2-(4-bromo-2-chloro-phenyl)-1-hydroxy-1-trifluoromethyl-propyl]-4-methyl-4H-benzo[1,4]oxazin-3-one (Example 22, step 3) was reacted with 3-chloro-4-methoxycarbonylphenylboronic acid to give the title compound as an off-white solid. MS (m/e)=568.3 [M+H+].

Provenance & Evidence