反应详情

温度

90 °C

A mixture of piperazin-1-carboxylic acid tert-butyl ester (0.64 g), 4-bromo-4′-(5-methoxypentyloxy)biphenyl (1 g), tris(dibenzylideneacetone) (chloroform) dipalladium(0) (59 mg), (S)-(−)-2,2′-bis(diphenylphosphino)-1,1′-binaphthyl (0.12 g) and sodium tert-butoxide (0.55 g) in toluene (10 ml) was stirred for 54 hours at 90° C. The reaction mixture was added to a mixture of water and ethyl acetate. The organic layer was taken and dried over magnesium sulfate. The magnesium sulfate was filtered off, and the filtrate was evaporated under reduced pressure to give 4-[4′-(5-methoxypentyloxy)biphenyl-4-yl]piperazin-1-carboxylic acid tert-butyl ester (1.19 g).

1. dry with materialdried over magnesium sulfate
2. filtrationThe magnesium sulfate was filtered off
3. customthe filtrate was evaporated under reduced pressure