N-(4-methylbenzenesulfonyl)- pyrrolidines and piperidines by a tandem SN2-michael addition reaction
摘要:
A tandem S(N)2-Michael addition sequence has been developed for the preparation of N-(4-methylbenzenesulfonyl)- pyrrolidines and piperidines bearing functionalized side chains at C-2.
N-(4-methylbenzenesulfonyl)- pyrrolidines and piperidines by a tandem SN2-michael addition reaction
摘要:
A tandem S(N)2-Michael addition sequence has been developed for the preparation of N-(4-methylbenzenesulfonyl)- pyrrolidines and piperidines bearing functionalized side chains at C-2.
Preparation of polyfunctional aryl and alkenyl zinc halides from functionalized unsaturated organolithiums and their reactivity in cross-coupling and conjugated addition reactions
作者:Ingo Klement、Mario Rottländer、Charles E. Tucker、Tahir N. Majid、Paul Knochel、Patricia Venegas、Gérard Cahiez
DOI:10.1016/0040-4020(96)00246-3
日期:1996.5
organolithiums which are stable for a short time at these low temperatures and can be transmetalated to organozinc derivatives by the addition of zinc bromide. The resulting unsaturated organozinc halides can then be warmed up and are perfectly stable at 25 °C. They react directly with tosyl cyanide. In the presence of CuCN·2LiCl, they add in a Michael-fashion to alkylidenemalonates. In the presence
Preparation of polyfunctional nitriles by the cyanation of functionalized organozinc halides with p-toluenesulfonyl cyanide
作者:Ingo Klement、Klaus Lennick、Charles E Tucker、Paul Knochel
DOI:10.1016/s0040-4039(00)60640-8
日期:1993.9
Various alkyl, alkenyl, akynyl, benzylic, aromatic or heterocyclic organozinc halides bearing functional groups such as an ester, a boronic ester, a cyanide, a halide or a trialkoxysilyl group react under mild conditions with p-toluenesulfonyl cyanide affording polyfunctional nitriles in 69–93 % yields.
<i>N</i>-(4-methylbenzenesulfonyl)- pyrrolidines and piperidines by a tandem S<sub>N</sub>2-michael addition reaction
作者:Richard A. Bunce、Jeffrey C. Allison
DOI:10.1080/00397919908086214
日期:1999.6
A tandem S(N)2-Michael addition sequence has been developed for the preparation of N-(4-methylbenzenesulfonyl)- pyrrolidines and piperidines bearing functionalized side chains at C-2.