反应详情

Following the method of example 54b, reaction of (E)-3-cyclopentyl-acrylic acid ethyl ester (87 g, 520 mmol) with bromine (29.3 ml, 572 mmol) and triethylamine (90 ml, 650 mmol) affords the title product as an oil (83.5 g) GC-MS (m/e): 247 (M+).