反应详情

A solution of 2-chloro-α,α,α-trifluoro-p-tolyl-3-(1-carbethoxyethoxy)-4-nitrophenyl ether (17.32 g, 0.04 mole) in dry ether (500 ml) is treated at -10° C. with a suspension of lithium aluminum hydride (1.9 g) in ether (approximately 100 ml) added with stirring over ten seconds. The termperature increases to about 0° to 10° C. and after a total of 45 seconds, the reaction mixture is quenched by pouring, with stirring, onto ice/dilute sulfuric acid. The ether phase is washed with water, dried, filtered through activated silica gel, and the solvent removed to give 2-chloro-α,α,α-trifluoro-p-tolyl-3-(1-hydroxymethylethoxy)-4-nitrophenyl ether as a dark oil, yield 14 g.

1. additionadded
2. temperatureThe termperature increases to about 0° to 10° C.
3. customafter a total of 45 seconds, the reaction mixture is quenched
4. additionby pouring
5. stirringwith stirring, onto ice/dilute sulfuric acid
6. washThe ether phase is washed with water
7. customdried
8. filtrationfiltered through activated silica gel
9. customthe solvent removed