(R)-2-methyl-propane-2-sulfinic acid (E)-1-[3-(tert-butyl-dimethyl-silanyloxy)-4-chloro-2-fluoro-phenyl]-methylideneamide 、
乙基溴化镁 、 在
氮 、
氯化铵 、 Ethyl acetate acetate 、
magnesium sulfate 、 crude product 、
3-tert-butyldimethylsilanyloxy-4-chloro-2-fluorobenzaldehyde 作用下,
以
四氢呋喃 为溶剂,
反应 3.0h,
以(R)-2-Methyl-propane-2-sulfinic acid {(R)-1-[3-(tert-butyl-dimethyl-silanyloxy)-4-chloro-2-fluoro-phenyl]-propyl}-amide, major diastereomer, was isolated as an off-white solid (98.8 g, 1H NMR >95%, 234 mmol, 52% yield)的产率得到(R)-2-methyl-propane-2-sulfinic acid {(R)-1-[3-(tert-butyl-dimethyl-silanyloxy)-4-chloro-2-fluoro-phenyl]-propyl}-amide