Generation of dienone and trienone dianion derivatives
作者:Dieter Seebach、Manat Pohmakotr
DOI:10.1016/s0040-4020(01)93280-6
日期:——
the dianions2, LUMO filled π-systems, from hydrogenated precursors, see schemes 1 and 2. The preparation of the allylated ketones 3a–d, of the acid derivatives 3e–h, 9, 10, 12 as well as of the dienones 11 is described. Their double deprotonation (→14, 18, 26, 30, 33, 36, and 40) is carried out by sequential treatment with potassium hydride and s-butyllithium/tetramethylethylene diamine (TMEDA) in
Dealkylative decarboxylation. IV. A novel approach to ketene thioacetals
作者:J.L. Belletire、D.R. Walley、S.L. Fremont
DOI:10.1016/s0040-4039(01)81671-3
日期:1984.1
Reaction of 2-carbomethoxy-1,3-dithiane enolate with in equimolar mixture of trimethylacetyl chloride and an aldehyde followed by dealkylative decarboxylation of the resulting pivalate yields ketenethioacetals.
[EN] AMIDOPYRAZOLE INHIBITORS OF INTERLEUKIN RECEPTOR-ASSOCIATED KINASES<br/>[FR] INHIBITEURS DE KINASES ASSOCIÉES AUX RÉCEPTEURS D'INTERLEUKINE À BASE D'AMIDOPYRAZOLE
申请人:MERCK SHARP & DOHME
公开号:WO2012129258A1
公开(公告)日:2012-09-27
This invention relates to amidopyrazole compounds that are inhibitors of Interleukin receptor-associated kinases, in particular IRAK-4, and are useful in the treatment of cellular proliferative diseases, for example, cancer, hyperplasia, restenosis, cardiac hypertrophy, immune disorders and inflammation.
Enantioselective α-Functionalization of 1,3-Dithianes by Iridium-Catalyzed Allylic Substitution
作者:Panpan Wang、Qian Jiang、Ruibo Zhao、Xingang Xie、Shouchu Tang、Xiaolei Wang
DOI:10.1021/acs.joc.0c01683
日期:2020.10.2
iridium-catalyzed asymmetric allylicsubstitution reaction with 2-alkoxy carbonyl-1,3-dithianes has been achieved with high regio- and enantioselectivities. The transformation provides a new method for the enantioselective α-functionalization of dithianes. The corresponding dithiane-containing products are easily converted into many other derivatives with high yields and enantioselectivities.
Study of the anomeric effect in 2-substituted 1,3-dithianes
作者:Eusebio Juaristi、Josefina Tapia、Rodolfo Mendez
DOI:10.1016/s0040-4020(01)87344-0
日期:1986.1
The conformationalanalysis of several 2-substituted 1,3-dithianes made possible the evaluation of S-C-Y anomericinteractions, where Y = SCH3, SC6H5, CO2CH3, CO6H5, CO2H and N(CH3)2. The relative magnitude of the effects observed for these groups [ΔG°dithiane(Y) - ΔGδ cyclohexane(Y)] can be explained in terms of the combined influence of dipole/dipole and two-electron stabilizing interactions (stereoelectronic
几个2-取代的1,3-二硫杂环丁烷的构象分析使SCY异头相互作用的评估成为可能,其中Y = SCH 3,SC 6 H 5,CO 2 CH 3,CO 6 H 5,CO 2 H和N(CH 3)2。可以用偶极/偶极和两电子稳定相互作用(立体电子效应)的综合影响来解释对这些基团[ΔG°二噻吩(Y)-ΔGδ环己烷(Y)]观察到的相对影响强度。