反应详情

温度

-40 °C

3.2 mL 1M LHMDS in hexanes (3.2 mmol) was added to 15 mL of DMF and cooled to −40° C. To this was added a solution of (1S)-3-(3-chlorophenyl)-3-cyano-1-(2-[(phenylmethyl)oxy]ethyl}propyl 4-methylbenzenesulfonate (1.00 g, 2.12 mmol) in 5 mL of DMF over 10 minutes and stirred for 40 minutes After warming to room temperature the reaction was stirred until no starting material remained by TLC. The reaction mixture was poured into 100 mL water, extracted with 50 mL EtOAc, the organic phase isolated, washed with brine and dried over MgSO4. The resulting residue was purified by silica gel chromatography with 25% EtOAc in hexanes to give the title compound (436 mg, 65% yield). 1H NMR (400 MHz, CHLOROFORM-D) δ ppm 1.4 (dd, J=7.5, 5.6 Hz, 1H) 1.5 (m, 1H) 1.7 (m, 1H) 2.0 (m, 2H) 3.6 (m, 2H) 4.5 (d, J=2.2 Hz, 2H) 7.1 (m, 1H) 7.2 (m, 3H) 7.3 (m, 5H).

1. temperatureAfter warming to room temperature the reaction
2. stirringwas stirred until no starting material
3. extractionextracted with 50 mL EtOAc
4. customthe organic phase isolated
5. washwashed with brine
6. dry with materialdried over MgSO4
7. customThe resulting residue was purified by silica gel chromatography with 25% EtOAc in hexanes