Tetrahedron

I-Oxydation catalytique des hydroxymethyl-2 phenols par des systemes M n Cl n/M 0/O 2 (M= Cu, Fe)

D Sparfel, J Baranne-Lafont, NK Cuong, P Capdevielle…

Index: Sparfel, Daniel; Baranne-Lafont, Joele; Cuong, Nguyen Kim; Capdevielle, Patrice; Maumy, Michel Tetrahedron, 1990 , vol. 46, # 3 p. 793 - 802

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Abstract

New oxygen-activating systems for dehydrogenation of 2-hydroxymethyl phenols 1 (a: R= tBu; b: R= CH3; c: R= H) to the corresponding salicylaldehydes 3 are described. These systems are composed of a transition metal (M0= Fe0 or Cu0), a transition metal ion (MnCln= Fe11Cl2 or Cu1Cl) in catalytic amount and molecular oxygen. The most active systems are Fe0FeCl2O2CH3OH and Cu0CuCl+ FeCl2O2CH3OH. Based on all the ...