2,2,2-Trifluoroethanol → 5-Hydroxy-5-(2,2,2-trifluoro-ethoxymethyl)-2-(4-trifluoromethoxy-phenyl)-hexahydro-cyclopenta[c]pyrrol-1-one

Participants

Reaction Conditions

Reaction Steps

A small piece of sodium was added to 2,2,2-Trifluoro-ethanol (20 mL), and the mixture was stirred at 80° C. for 5 minutes, then rac-(3aR,5S,6aS)-2-[4-(trifluoromethoxy)phenyl]hexahydro-1H-spiro[cyclopenta[c]pyrrole-5,2′-oxiran]-1-one was added. The mixture was stirred for 6 h. The solution was then poured into water (25 mL) and extracted with ether (3×20 mL), dried over Na2SO4. The solvent was removed and the residue was purified by prep-TLC (petroleum ether:ethyl acetate=1:1) to yield the title compound. 1H NMR (300 MHz, CDCl3): δ 7.66-7.63 (m, 2H), 7.20-7.17 (m, 2H), 4.13 (t, 1H, J=9.6 Hz), 3.86 (q, 2H, J=8.7 Hz), 3.71-3.61 (m, 3H), 3.22-3.17 (m, 1H), 3.05-2.99 (m, 1H), 2.38-2.33 (m, 1H), 2.09-1.76 (m, 4H); LC-MS: 414.1 [M+1]+.

Provenance & Evidence