(6-methyl-1-(phenylsulfonyl)-1H-indol-3-yl)methyl 2,4-dichlorobenzoyloxycarbamate 在
(4S,4'S,5R,5'R)-2,2'-(propane-2,2-diyl)bis(4,5-diphenyl-4,5-dihydrooxazole) 、 iron(II) acetate 作用下,
以
甲苯 、
乙腈 为溶剂,
反应 12.0h,
以65%的产率得到(2R,3S)-6-methyl-2'-oxo-1-(phenylsulfonyl)spiro[indoline-3,4'-oxazolidine]-2-yl 2,4-dichlorobenzoate