The new reduction reaction of the hydroxy groups of 4-hydroxy-4-phenyl-1,2,3,4-tetrahydroisoquinolines (1) to the corresponding alkanes (2) with mineral and Lewis acids is reported. A stereoselective intermolecular hydride shift mechanism of the reduction was proved by reaction of the deuterated derivateives (14 and 15) of 1a with 10N HCl-C2H5OH and BBr3 in CH3CN.
New Reduction Reaction of Benzylic Alcohols with Acid and Proof of the Intermolecular Hydride Shift Mechanism
作者:Masaru Kihara、Jun-ichi Andoh、Chiaki Yoshida
DOI:10.3987/com-99-8786
日期:——
The new reduction reaction of the hydroxy groups of 4-hydroxy-4-phenyl-1,2,3,4-tetrahydroisoquinolines (1) to the corresponding alkanes (2) with mineral and Lewis acids is reported. A stereoselective intermolecular hydride shift mechanism of the reduction was proved by reaction of the deuterated derivateives (14 and 15) of 1a with 10N HCl-C2H5OH and BBr3 in CH3CN.
Tetrahydroisoquinoline basic ethers and pharmaceutical compositions and
申请人:Beecham Group Limited
公开号:US04113869A1
公开(公告)日:1978-09-12
Compounds of the formula (II): ##STR1## and salts thereof wherein R.sub.1 is a C.sub.1-6 alkyl, C.sub.3-6 cycloalkyl phenyl, naphthyl, aralkyl, substituted phenyl or substituted naphthyl group; R.sub.2 is a group: ##STR2## wherein R.sub.6 is a hydrogen atom or a C.sub.1-6 alkyl group, R.sub.7 is a hydrogen atom or a C.sub.1-6 alkyl, phenyl, tolyl, or benzyl group or R.sub.6 is linked to R.sub.7 so that the NR.sub.6 R.sub.7 moiety is a 5-,6- or 7- membered ring, R.sub.8 is a hydrogen atom or a C.sub.1-4 alkyl group or is joined to R.sub.6 to form part of a morpholino ring and R.sub.9 and R.sub.10 are each hydrogen atoms or C.sub.1-4 alkyl groups; R.sub.3 is a hydrogen atom or a C.sub.1-6 alkyl or a trifluoromethyl group; R.sub.4 is a hydrogen atom or a C.sub.1-6 alkyl, benzyl or phenyl group or an acyl group containing from 2 to 7 carbon atoms and R.sub.5 is a hydrogen atom or a -C.sub.1-6 alkyl group; have been found to be mood modifying agents and anorexia agents.