1,4-Dibromobenzene → Ethyl 1-(4-bromophenyl)piperidine-4-carboxylate

온도

85 °C

A suspension of ethyl piperidine-4-carboxylate (3.27 mL, 21.20 mmol), 1,4-dibromobenzene (5 g, 21.20 mmol), TRIS(DIBENZYLIDENEACETONE)DIPALLADIUM(0) (0.485 g, 0.53 mmol), 2,2'-bis(diphenylphosphino)-1,1'-binaphthyl (0.990 g, 1.59 mmol) and Sodium Tert-Butoxide (2.444 g, 25.43 mmol) in anhydrous toluene (60 mL) was stirred at 85 °C under nitrogen for 16 hours. The reaction was cooled to ambient temperature, diluted with Ether (100 mL) and filtered through celite. The filtrate was evaporated in vacuo to yield crude product. The crude product was purified by flash silica chromatography, elution gradient 0 to 20% EtOAc in heptane. Pure fractions were evaporated to dryness to afford ethyl 1-(4-bromophenyl)piperidine-4-carboxylate (3.91 g, 59.1 %) as a yellow oil.

ORD 기록

ord-6d4c20d55c834a949848dd34c3fa431d

출처 데이터셋

750 AstraZeneca ELN dataset

원본 링크

출처 보기