Process for the selective preparation of monofluoro derivatives

Details Process for the selective preparation of monofluoro derivatives Process for the selective preparation of monofluoro derivatives

C - Chemistry, Metallurgy

07

C

C07C 63/10 (2006.01) C07B 39/00 (2006.01) C07C 17/16 (2006.01) C07C 19/08 (2006.01) C07C 22/08 (2006.01) C07C 51/60 (2006.01) C07C 53/40 (2006.01) C07C 63/70 (2006.01) C07C 67/307 (2006.01) C07C 69/63 (2006.01) C07F 9/54 (2006.01)

Patent

CA 2181134

Process for the Selective Preparation of Monofluoro Derivatives Process for the preparation of compounds of the formula (1) Image (1) in which R1, R2 and R3 independently of each other are H, C1-C12-alkyl, PhCH2, CH2=CH-CH2, C5-C7-cycloalkyl, C6-C12-aryl, C6F5-, -CO2C2H5 or where two of the radicals R1, R2 or R3 together are = O, which comprises reacting alcohols or carboxylic acids of the formula (2) Image (2) in which R1', R2' and R3' independently of each other are H, C1-C12-alkyl, PhCH2, CH2=CH-CH2, C5-C7-cycloalkyl, C6-C12-aryl, C6F5-, -CO2C2H5 or where two of the radicals R1', R2' or R3' are = O, with a fluorinating agent of the formula (3) Image (3) where X = P, N, P (NR2) 3 or As and R = C1-C4-alkyl.

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