发现了由K 2 S 2 O 8和可见光光氧化还原催化介导的可见光照射串联氧化芳基迁移/羰基形成反应。所提出的转化提供了以伴随羰基形成的1,4-芳基转移的区域选择性方式从容易获得的均炔醇衍生物直接获得重要的α-丙二烯醛/酮衍生物。操作简单和底物范围广泛表明该方法在合成高功能α-丙二烯醛/酮衍生物方面具有巨大潜力。
TBAI/K<sub>2</sub>S<sub>2</sub>O<sub>8</sub>Initiated Radical Cyclization to Synthesize<i>β</i>- Arylsulfonyl Naphthalenes from Homopropargylic Alcohols and Sulfonyl Hydrazides
作者:Xiaodong Yang、Lianbiao Zhao、Bingxiang Yuan、Zhenjie Qi、Rulong Yan
DOI:10.1002/adsc.201700634
日期:2017.9.18
metal‐free radical addition method for the synthesis of β‐arylsulfonyl naphthalenes with homopropargylic alcohols and sulfonyl hydrazides has been developed. In this reaction, sulfonyl hydrazide is employed as the source of sulfonyl radical to produce the desired sulfone directly. There is the first example for homopropargylic alcohol through direct intramolecular addition of vinyl radical to arenes
开发了一种金属自由基加成法,用高炔丙醇和磺酰肼合成β-芳基磺酰基萘。在该反应中,使用磺酰肼作为磺酰基的来源,以直接生产所需的砜。第一个例子是通过由TBAI / K 2 S 2 O 8反应系统引发的乙烯基与磺酰基基团直接向芳烃中分子内加成乙烯基炔醇,并以中等收率产生所需的产物。
A method for accessing sulfanylfurans from homopropargylic alcohols and sulfonyl hydrazides
作者:Xiaodong Yang、Rulong Yan
DOI:10.1039/c7ob00566k
日期:——
A sulfenylation/cyclization reaction has been developed for the synthesis of sulfanylfurans in the presence of iodine.
Directed hydrozirconation of homopropargylic alcohols
作者:Xiaofeng Liu、Joseph M. Ready
DOI:10.1016/j.tet.2008.03.052
日期:2008.7
Homopropargylic alcohols undergo directed hydrozirconation with Schwartz reagent (Cp(2)ZrHCl) to generate vinyl-metal species in which the metal fragment is proximal to the alkoxide. Electrophilic trapping yields tri-substituted olefins in good yields with good control of regio- and stereochemistry. Experiments with a homopropargylic ether confirmed the role of the hydroxyl group in the directed hydrometalation
A novel copper‐catalyzed one‐pot functionalization of homopropargylic alcohols that involves trifluoromethylation, aryl migration, and formation of a carbonyl moiety has been developed. This reaction constitutes the first direct conversion of homopropargylic alcohols into CF3‐containing 3‐butenal or 3‐buten‐1‐one derivatives in a regioselective manner. Mechanistic studies indicate that the 1,4‐aryl
α-C–H Functionalization of π-Bonds Using Iron Complexes: Catalytic Hydroxyalkylation of Alkynes and Alkenes
作者:Yidong Wang、Jin Zhu、Austin C. Durham、Haley Lindberg、Yi-Ming Wang
DOI:10.1021/jacs.9b11716
日期:2019.12.18
functionalization of C-Hbonds enables streamlined and sustainable solutions to problems in synthetic organic chemistry. In this Communication, we disclose an iron-based catalytic system for the functionalization of propargylic and allylic C-Hbonds. Inexpensive and readily-available cyclopentadienyliron(II) dicarbonyl complexes were employed as catalysts for a novel deprotonative activation mode for C-H functionalization
发现基于地球丰富的过渡金属的催化体系用于 CH 键的功能化,为合成有机化学中的问题提供了简化和可持续的解决方案。在本通讯中,我们公开了一种用于炔丙基和烯丙基 CH 键功能化的铁基催化系统。廉价且容易获得的环戊二烯基 (II) 二羰基配合物被用作 CH 官能化的新型去质子活化模式的催化剂,这种方法允许不饱和结构单元与芳基醛和其他羰基亲电子试剂直接结合,以提供一系列不饱和的在操作简单和官能团耐受反应条件下的醇偶联产物。