Other

Dsm N.v.

Charles E Tucker

Qiongzhong Jiang

The present invention provides a catalyst system and a process for the preparation of a nonracemic chiral alcohol by hydrogenation of a ketone using the catalyst system, wherein the catalyst system comprises ruthenium, a nonracemic chiral diphosphine ligand, an amino-thioether ligand, and a base.

Process for preparing nonracemic chiral alcohols

The present invention provides a process for the preparation of a nonracemic diastereomer of 1-(4-benzoxy-phenyl)-2-(4-hydroxy-4-phenyl-piperidin-1-yl)-1-propanol by hydrogenation of a corresponding nonracemic 1-(4-benzoxy-phenyl)-2-(4-hydroxy-4-phenyl-piperidin-1-yl)-1-propanone using a catalyst system comprising ruthenium, a nonracemic diphosphine ligand, a bidentate amine ligand selected from amino-thioethers and achiral diamines, and a base.

Process for the preparation of nonracemic syn-1-(4-hydroxy-phenyl)-2-(4-hydroxy-4-phenyl-piperidin-1-yl)-1-propanol compounds

Apparatus for crushing scrap vehicle wheels includes a frame constructed from three radially disposed rectangular tube beams each mounting a hydraulic cylinder and crushing head which converge and operate radially to deform a scrap wheel supported at the center of the frame in order to separate the steel rim of the wheel from the surrounding tire casing. Each crushing head is supported against upward deflection by an interlocking slide connection including a slide carriage fixed to each head and slideable along the beam and stationary hold down brackets mounted on the opposite side of each beam and vertically adjustable for controlling the hold down pressure exerted on the carriages.

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Superior, CO, United States of America

Charles E Tucker