A simple, stereoselective, room-temperature synthesis of cis vinyloxiranes and trans 1-phenyl-1,3-butadiene
作者:Jacques Auge、Serge David
DOI:10.1016/s0040-4039(00)88249-0
日期:1983.1
The organotin reagent from 1-chloro-3-iodoprop-1-ene and SnCl2 in dimethylformamide reacted with aldehydes by ite chlorine-substituted carbon atom. Treatment with NaOMe then gave vinyloxiranes with good stereo-selectivity. benzaldehyde and 1-bromo-3-iodoprop-1-ene in the presence of two equivalents of SnCl2 gave exclusively -1-phenyl-1,3-butadiene.
Rearrangement of suitably constituted aryl, alkyl, or vinyl radicals by acyl or cyano group migration
作者:Athelstan L. J. Beckwith、D. M. O'Shea、Steven W. Westwood
DOI:10.1021/ja00216a033
日期:1988.4
Transposition des bromo-2 benzenepropionates d'ethyle, substitues en α par un groupe acetyl ou cyano, en acetyl-2 et cyano-2 benzenepropionate d'ethyle. Synthese d'oxo-3 cyclanecarboxylates d'alkyle a partir de β-cetoesters; par exemple l'iodomethyl-2 oxo-2 cyclopentanecarboxylate d'ethyle conduit a l'oxo-3 cyclohexanecarboxylate d'ethyle
Transposition des bromo-2 benzopropionates d'ethyle, substitues en α par un groupe acetyl ou cyano, en acetyl-2 et cyano-2 benzopropionate d'ethyle。合成这些 d'oxo-3 cyclanecarboxylates d'alkyle a partir de β-cetoesters; 例如,l'iodomethyl-2 oxo-2 cyclopentanecarboxylate d'ethyle 导管 a l'oxo-3 cyclohexcarboxylate d'ethyle
Substituted 2-arylimino heterocycles and compositions containing them, for use as progesterone receptor binding agents
申请人:Bayer Corporation
公开号:US06353006B1
公开(公告)日:2002-03-05
This invention relates to 2-arylimino heterocycles, including 2-arylimino-1,3-thiazolidines, 2-arylimino-2,3,4,5-tetrahydro-1,3-thiazines, 2-arylimino-1,3-thiazolidin-4-ones, 2-arylimino-1,3-thiazolidin-5-ones, and 2-arylimino-1,3-oxazolidines, and their use in modulating progesterone receptor mediated processes, and pharmaceutical compositions for use in such therapies.
Single-Electron/Pericyclic Cascade for the Synthesis of Dienes
作者:Natalie E. Campbell、Glenn M. Sammis
DOI:10.1002/anie.201403234
日期:2014.6.10
The highly efficient and diastereoselective synthesis of E dienes has been accomplished through radical cyclization of bromoallyl hydrazones. This methodology has been further extended to generate these products through a one‐pot condensation/radical cyclization/cycloreversion cascade from simple aldehyde starting materials in high yields (>75 %) and high diastereoselectivities (>95:5). Mechanistic
E 二烯的高效和非对映选择性合成是通过溴代烯丙基的自由基环化完成的。通过单罐缩合/自由基环化/环还原级联反应,从简单的醛原料中以高收率(> 75%)和高非对映选择性(> 95:5)扩展了该方法,以生成这些产物。机理研究表明,级联反应在环还原之前通过环状重氮中间体进行。
Regioselective synthesis of 2H-indazoles through Ga/Al- and Al-mediated direct alkylation reactions of indazoles