(+/-)-3-(5-methoxy-1H-indol-3-yl)-2-methyl-2-nitro-propionic acid methyl ester → (RS)-2-amino-3-(5-methoxy-1H-indol-3-yl)-2-methyl-propionic acid methyl ester

참여 물질

반응 단계

To a solution of (+/−)-3-(5-methoxy-1H-indol-3-yl)-2-methyl-2-nitro-propionic acid methyl ester (4.26 g) in methanol (80 mL) wet Raney nickel (ca 12 g) is added, and the mixture is stirred under hydrogen at atmospheric pressure at room temperature overnight. The solid is filtered through Celite, is washed with methanol, and the filtrate is concentrated. Column chromatography of the residue (dichloromethane-methanol, 98:2→95:5) gives the title compound (3.45 g, 90%). M.p. 131-132° C. (from ethyl acetate-light petroleum).

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