在可能的金氧化还原催化下,炔烃的立体选择性硫代烯丙基化反应效率高(催化剂负载量低至0.1%,产率高达99%),底物范围广(各种炔烃,分子间和分子内方式)。金(I)催化剂既充当炔烃活化的π-酸,又充当Au I / III偶联的氧化还原催化剂,而原位生成的sulf阳离子则起弱氧化剂的作用。这种新颖的方法为金的氧化还原催化提供了令人兴奋的系统,而无需强氧化剂。
Highly Efficient and Stereoselective Thioallylation of Alkynes: Possible Gold Redox Catalysis with No Need for a Strong Oxidant
作者:Jin Wang、Shuyao Zhang、Chang Xu、Lukasz Wojtas、Novruz G. Akhmedov、Hao Chen、Xiaodong Shi
DOI:10.1002/anie.201802540
日期:2018.6.4
Stereoselectivethioallylation of alkynes under possiblegoldredoxcatalysis was accomplished with high efficiency (as low as 0.1 % catalyst loading, up to 99 % yield) and broad substrate scope (various alkynes, inter‐ and intramolecular fashion). The gold(I) catalyst acts as both a π‐acid for alkyne activation and a redox catalyst for AuI/III coupling, whereas the sulfonium cation generated in situ
在可能的金氧化还原催化下,炔烃的立体选择性硫代烯丙基化反应效率高(催化剂负载量低至0.1%,产率高达99%),底物范围广(各种炔烃,分子间和分子内方式)。金(I)催化剂既充当炔烃活化的π-酸,又充当Au I / III偶联的氧化还原催化剂,而原位生成的sulf阳离子则起弱氧化剂的作用。这种新颖的方法为金的氧化还原催化提供了令人兴奋的系统,而无需强氧化剂。
Aluminum-chloride catalyzed reaction of allylic sulfides with methyl propiolate: A novel addition reaction via an ionic [3.3] sigmatropic rearrangement
The aluminum-chloride catalyzed reaction of allylic sulfides with methyl propiolate resulted in the clean formation of novel 1:1 adducts via ionic [3.3] sigmatropic rearrangements.
氯化铝催化的烯丙基硫醚与丙酸甲酯的反应通过离子[3.3]σ重排干净地形成了新的1:1加合物。
Stereoselective addition reactions of allylic sulfides to acetylenic esters: (E)/(Z) stereochemical variations by Lewis acid
HAYAKAWA, KENJI;KAMIKAWAJI, YOSHIMASA;WAKITA, AKEMI;KANEMATSU, KEN, J. ORG. CHEM., 1984, 49, N 11, 1985-1989
作者:HAYAKAWA, KENJI、KAMIKAWAJI, YOSHIMASA、WAKITA, AKEMI、KANEMATSU, KEN
DOI:——
日期:——
Reaction of Arynes with Vinyl Sulfoxides: Highly Stereospecific Synthesis of <i>ortho</i>-Sulfinylaryl Vinyl Ethers
作者:Yuanming Li、Armido Studer
DOI:10.1021/acs.orglett.6b03827
日期:2017.2.3
The reaction of in situ generated arynes with aryl vinyl sulfoxides provides ortho-arylsulfinylaryl vinylethers via aryne σ-bond insertion into the S–O-bond and concomitant stereospecific S–O-vinyl migration. The cascade allows preparing di- or trisubstituted vinylethers with excellent stereospecificity. The reactions proceed under mild conditions, the substrate scope is broad, and the products obtained