Abstract: The present invention is directed to a process for the catalytic oxidation of the thioether 5-methoxy-2-((4-methoxy-3,5-dimethyl-2-pyridinyl)methyl)methylthio)-1H-benzimidazole to its sulfoxide: 5-methoxy-2-((4-methoxy-3,5-dimethyl-2-pyridinyl)methyl)methylsulfinyl)-1H-benzimidazole comprising: reacting the thioether with: 1) a transition metal catalyst; and, 2) an oxygen source; wherein the thioether is oxidized to a sulfoxide and wherein one of either the R and S enantiomers is formed to an enantiomeric excess.

Abstract: A high power industrial gear drive with a cooling system that improves upon the designs of shaft fan and electrical fan cooling systems for gear drives by effectively increasing the wetted surface area of the gear drive housing through the introduction of heat exchange tubes through the internal gear drive oil sump and providing cooling surfaces directly in the sump oil for convection from air flow created by the fans through the heat exchange tubes.