Method for the preparation of cis-4-tert-butylcyclohexanol

Details Method for the preparation of cis-4-tert-butylcyclohexanol Method for the preparation of cis-4-tert-butylcyclohexanol

C - Chemistry, Metallurgy

07

C

C07C 29/145 (2006.01) B01J 31/24 (2006.01) B01J 31/28 (2006.01) C07C 35/08 (2006.01)

Patent

CA 2690437

The present disclosure relates to a method for the stereoselective production of cis-4-tertbutylcyclohexanol comprising contacting 4-tert-butylcyclohexanone with hydrogen gas, a catalyst comprising a ruthenium-aminophosphine complex and a base, wherein the complex is of the formula RuX2 (PNH2)a(P2)b (I), wherein X is anionic ligand, (PNH2) represents an aminophosphine ligand of the formula (II) R1R2P-L- NH2 and (P2) represents a diphosphine ligand of the formula (III) R3R4P-L-PR5R6.

La présente invention porte sur un procédé pour la production stéréosélective de cis-4-tert-butylcyclohexanol comprenant la mise en contact de la 4-tert-butylcyclohexanone avec de l'hydrogène gazeux, un catalyseur comprenant un complexe de ruthénium-aminophosphine et une base, le complexe étant de la formule RuX2 (PNH2)a(P2)b (I), où X est un ligand anionique, (PNH2) représente un ligand aminophosphine de la formule (II) R1R2P-L-NH2 et (P2) représente un ligand diphosphine de la formule (III) R3R4P-L-PR5R6.

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