频哪醇(二氯甲基)硼酸酯 、
1-Piperidinecarboxylic acid, 3-ethenyl-4-(2-oxoethyl)-, phenylmethylester, (3R,4S)- 在
chromium dichloride 、 lithium iodide 作用下,
以
四氢呋喃 为溶剂,
反应 12.0h,
生成 (4R)-[3-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)allyl]-(3R)-vinylpiperidine-1-carboxylic acid benzyl ester 、 (4R)-[3-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)allyl]-(3R)-vinylpiperidine-1-carboxylic acid benzyl ester