(E)-(R)-4-tert-butoxycarbonylamino-2-methyl-pent-2-enoic acid ethyl ester 在
铂 作用下,
以
乙酸乙酯 为溶剂,
反应 18.0h,
以to afford (2R,4R)-4-tert-butoxycarbonylamino-2-methyl-pentanoic acid ethyl ester, 1H-NMR (400 MHz, CDCl3); 6 ppm 1.13 (t, 3H), 1.18 (m, 3H), 1.26 (t, 3H), 1.43 (s, 9H), 1.81 (s, 1H), 2.50 (m, 1H), 3.72 (m broad, 1H), 4.14 (m, 2H), 4.33 (m broad, 1H)的产率得到(2R,4R)-4-tert-butoxycarbonylamino-2-methyl-pentanoic acid ethyl ester