Towards assembling of diarylmethine unit present in biologically important molecules, we have developed a new Weinreb Amide (WA) basedbuildingblock, derived from glycolic acid. The WA functionality present in this buildingblock had allowed the sequential addition of various arylmagnesium bromide reagents in a controlled manner enabling assembling of diarylmethine unit. The developed synthetic route
为了组装生物学上重要的分子中存在的二芳基次甲基单元,我们开发了一种新的基于 Weinreb 酰胺 (WA) 的结构单元,该结构单元源自乙醇酸。该构件中存在的 WA 官能团允许以受控方式顺序添加各种芳基溴化镁试剂,从而能够组装二芳基次甲基单元。开发的合成路线可以轻松获得重要的二芳基乙烯和 α,α-二芳基乙二醇。合成的α,α-二芳基乙二醇为合成重要的对称和不对称α,α-二芳基乙醛作为有价值的中间体铺平了道路。
Traceless directing group mediated branched selective alkenylation of unbiased arenes
作者:Soumitra Agasti、Aniruddha Dey、Debabrata Maiti
DOI:10.1039/c6cc07032a
日期:——
–COOH group assisted branched selective olefination of simple arenes.
–COOH基团辅助简单芳烃的分支选择性烯基化。
ISO CA-4 AND ANALOGUES THEREOF AS POTENT CYTOTOXIC AGENTS INHIBITING TUBULINE POLYMERIZATION
申请人:Alami Mouâd
公开号:US20100129471A1
公开(公告)日:2010-05-27
The invention relates to a compound of the formula (I) in which: R
1
, R
2
and R
3
are independently a methoxy group optionally substituted by one or more fluorine atoms; R
4
is a hydrogen atom; R
5
and R
6
are identical and each represent a hydrogen or fluorine atom; A is a cycle selected from the group including aryl and heteroaryl groups, wherein said groups can be substituted.
Nickel-Catalyzed Direct Synthesis of Aryl Olefins from Ketones and Organoboron Reagents under Neutral Conditions
作者:Chuanhu Lei、Yong Jie Yip、Jianrong Steve Zhou
DOI:10.1021/jacs.7b02742
日期:2017.5.3
Nickel-catalyzed addition of arylboron reagents to ketones results in aryl olefins directly. The neutral condition allows acidic protons of alcohols, phenols, and malonates to be present, and fragile structures are also tolerated.
Cobalt-Catalyzed Cross-Couplings between Alkenyl Acetates and Aryl or Alkenyl Zinc Pivalates
作者:Jie Li、Paul Knochel
DOI:10.1002/anie.201805486
日期:2018.8.27
(5 mol %) in the presence of 2,2′‐bipyridyl (5 mol %) enables electrophilic alkenylations between easily accessible alkenyl acetates or tosylates and various functionalized aryl zinc pivalates at ambient temperature. This cobalt‐catalyzed process was further applicable to alkenyl zinc pivalates to provide substituted 1,3‐dienes.