Process for preparing threo-2-hydroxy-3-(4-...

Details Process for preparing threo-2-hydroxy-3-(4-... Process for preparing threo-2-hydroxy-3-(4-...

C - Chemistry, Metallurgy

07

F

260/476.3

C07F 7/22 (2006.01)

Patent

CA 1175855

ABSTRACT OF THE DISCLOSURE A threo-2-hydroxy-3-(4-methoxyphenyl)-3-(2-nitrophenyl- thio)propionic ester of the formula: Image wherein R is an ester residue, is prepared by condensing a trans-3-(4-methoxyphenyl)glycidic ester of the formula: Image wherein R is the same as defined above, with 2-nitrothiophenol in the presence of a Lewis acid.

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