硝基烯烃是一种常见且用途广泛的试剂。它从烯烃合成通常受到顺式和反式化合物混合物的形成的限制。在这里,我们报告亚硝酸银 (AgNO2) 与 TEMPO 一起可以促进范围广泛的烯烃的区域和立体选择性硝化。这项工作公开了一种新的有效方法,其中从烯烃开始,硝基烷烃自由基形成和随后的转化以立体选择性方式导致所需的硝基烯烃。
[EN] 17a-HYDROXYLASE/C17,20-LYASE INHIBITORS<br/>[FR] INHIBITEURS DE LA 17?-HYDROXYLASE/C17,20-LYASE
申请人:NOVARTIS AG
公开号:WO2012035078A1
公开(公告)日:2012-03-22
The present invention provides compounds of Formula (I), or a pharmaceutically acceptable salt thereof, where R1, R2, R3, R4, R5, R6, A and n are as defined herein. A deuteriated derivative of the compound of Formula (I) is also provided.
The present invention provides compounds of Formula (I), or a pharmaceutically acceptable salt thereof, where R
1
, R
2
, R
3
, R
4
, R
5
, R
6
, A and n are as defined herein. A deuteriated derivative of the compound of Formula (I) is also provided.
A stereoselective, denitrative cross-coupling of β-nitrostyrenes with N-alkylpyridinium salts for the preparation of functionalized styrenes has been developed. The visible-light-induced reaction proceeds without any catalyst at ambient temperature. Broad in scope and tolerant to multiple functional groups, the moderately yielding transformation is orthogonal to several traditional metal-catalyzed
Chlorination of Conjugated Nitroalkenes with PhICl2 and SO2Cl2 for the Synthesis of α-Chloronitroalkenes
作者:Andrey A. Tabolin、Anastasia A. Fadeeva、Sema L. Ioffe
DOI:10.1055/s-0040-1707396
日期:2020.9
Chlorination of conjugatednitroalkenes with iodobenzene dichloride or sulfuryl chloride to give target α-chloronitroalkenes in good yields is described. Details of the procedure depend on the donating ability of the nitroalkene substituents. The activity of the described chlorinating agents increases in order ‘PhICl2/Py’ < ‘SO2Cl2’ < ‘SO2Cl2/HCl’ with the former producing the best yields for highly
作者:Lihua Niu、Hao Guo、Fuqiang Jia、Jiayu Shen、Yunxia Wang、Xiangdong Hu
DOI:10.1039/d3cc06275a
日期:——
N-nitro type reagents have been demonstrated as mild nitration tools in recent years. This work presents an exploration of direct nitration of aryl alkenes mediated by DNDMH, a novel N-nitro type reagent developed in our previous study. It exhibits herein a new property of DNDMH as an effective direct nitration reagent for aryl alkenes, through probably the delivery of nitro radicals with the aid of