(4R)-3,4-dihydroxy-[1,2]-oxazinane-2-carboxylic acid tert-butyl ester 、
甲氧羰基亚甲基三苯基正膦 以
甲苯 为溶剂,
反应 8.0h,
生成 、 methyl (E,4R)-4-hydroxy-6-[(2-methylpropan-2-yl)oxycarbonylamino]oxyhex-2-enoate 、 (3R,4R)-4-hydroxy-3-(methoxycarbonyl)methyl-[1,2]-oxazinane-2-carboxylic acid tert-butyl ester 、
(+)-(3S,4R)-4-hydroxy-3-(methoxycarbonyl)methyl-[1,2]oxazinane-2-carboxylic acid tert-butyl ester