Tetrahydrofuran → HCID 118061901, compound

Participants

Reaction Conditions

Reaction Steps

A stirred solution of Intermediate 332C (32.6 mg, 0.217 mmol) in toluene (1 mL) at RT under nitrogen was added with TEA (0.045 mL, 0.325 mmol) and DPPA (0.050 mL, 0.217 mmol) and heated to 70° C. for 2 h. The reaction mass was cooled to RT and to it was added a solution of Intermediate 185B (30 mg, 0.108 mmol) in THF (1 mL) and stirred at RT for 16 h. The reaction mass was diluted with ethyl acetate (25 mL), washed with water and brine, dried over anhydrous Na2SO4, filtered, and the filtrate concentrated under reduced pressure. The individual isomers were separated by preparative chiral SFC (Column: WHELK-O® 1 (R,R) (250×4.6 mm), 5μ column, 5 Co-Solvent: 0.2% DEA, Column Temperature: 24.4, Total Flow: 3 mL, CO2 Flow Rate: 2.1, Co-Solvent Flow Rate: 0.9, Co-Solvent %: 30%, Back Pressure: 101 bar.

Provenance & Evidence