Tetraisoquinoline compounds which have useful pharmaceutical utility
申请人:The Boots Company PLC
公开号:US05519034A1
公开(公告)日:1996-05-21
Tetrahydroisoquinoline compounds of formula I ##STR1## and pharmaceutically acceptable salts and lipophilic ester thereof have utility as analgesics and in the treatment of psychoses, Parinson's disease, Lesch-Nyan syndrome, attention deficit disorder or cognitive impairment or in the relief of drug dependence or tardive dyskinesia.
Nickel(0)/NaHMDS adduct-mediated intramolecular alkylation of unactivated arenes via a homolytic aromatic substitution mechanism
作者:Louis-Philippe B. Beaulieu、Daniela Sustac Roman、Frédéric Vallée、André B. Charette
DOI:10.1039/c2cc33547f
日期:——
A variety of polycycles can be synthesized via an intramolecular alkylation cyclization promoted by Ni(PPh3)4 and NaHMDS. Mechanistic investigations support the catalytic nature of Ni0 in the course of TEMPO scavenging experiments and its association with the substrate and NaHMDS to form an adduct by DOSY NMR.
Substitution reactions between arenethiolate anions and 1,3-dihalo-2,2-dimethylpropanes. Synthetic scope and mechanistic aspects
作者:Alicia Beatriz Peñéñory、Cecilia Andrea Barrionuevo、Juan Elias Argüello
DOI:10.3998/ark.5550190.0012.721
日期:——
The synthetic scope of the reactionsbetween benzenethiolate, 4-methoxybenzenethiolate, 2-naphthalenethiolate, and 2-pyridinethiolate anions with 1,3-dihalo-2,2-dimethylpropane was studied. These reactions render mono and disubstituted products from good to excellent yields. For all the substrates studied the monosubstituted halogenated product is the intermediate or the main product depending on the
Synthesis of metallacyclobutanes and metallacyclobutabenzenes of molybdenum and tungsten
作者:H.J.R. de Boer、B.J.J. van de Heisteeg、G. Schat、O.S. Akkerman、F. Bickelhaupt
DOI:10.1016/0022-328x(88)80116-5
日期:1988.5
Reactions of 1,3-bis(bromomagnesio)-2,2-dimethylpropane or 1-magnesacyclo-butabenzene with either dichloromolybdenocene or dichlorotungstenocene have given the corresponding four-membered metallacycles of both metals.