Ethyl 1-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)cyclopropanecarboxylate → HCID 66660230, compound

Participants

Reaction Steps

Prepared according to the procedure described in Example 6, Step 3 using [5-(4-bromo-phenyl)-3-methyl-isoxazol-4-yl]-carbamic acid 1-(4-trifluoromethyl-phenyl)-ethyl ester and 1-[4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenyl]-cyclopropanecarboxylic acid ethyl ester; the isolated material was then purified by preparative HPLC, using a chiral column (95:5 hexanes:EtOAc) to provide enantiomer A and enantiomer B. Enantiomer A had a retention time of 30 minutes, enantiomer B had a retention time of 50 minutes.

Provenance & Evidence