3-Aryloxy-3-aryl-propaneamines and their method of use
申请人:Roussel Uclaf
公开号:US04296126A1
公开(公告)日:1981-10-20
Novel benzene-propanamines of the formula ##STR1## wherein X is selected from the group consisting of hydrogen, chlorine, fluorine and bromine, R.sub.1 is selected from the group consisting of hydrogen and alkyl of 1 to 5 carbon atoms, R.sub.2 is alkyl of 1 to 5 carbon atoms, R.sub.3 is selected from the group consisting of hydrogen, chlorine, bromine, --CF.sub.3, methyl and methoxy when R.sub.4 is nitro and R.sub.3 is selected from the group consisting of amino and acetamido when R.sub.4 is hydrogen and their non-toxic, pharmaceutically acceptable acid addition salts having anorexigenic activity and inhibit serotonine uptake in vivo and in vitro and their preparation.
Use of Achiral (Diphosphine)RuCl<sub>2</sub>(Diamine) Precatalysts as a Practical Alternative to Sodium Borohydride for Ketone Reduction
作者:Pieter D. de Koning、Mark Jackson、Ian C. Lennon
DOI:10.1021/op060063n
日期:2006.9.1
Stoichiometric sodiumborohydride is frequently used in the chemoselective reduction of ketones to racemic secondary alcohols. Catalytic homogeneous hydrogenation using (diphosphine)RuCl2(diamine) complexes provides a practical and economic alternative. A range of substrates were investigated and the optimum precatalyst identified in each case. Norcamphor was reduced with high diastereoselectivity