FeCl<sub>3</sub>·6H<sub>2</sub>O Catalyzed Disproportionation of Allylic Alcohols and Selective Allylic Reduction of Allylic Alcohols and Their Derivatives with Benzyl Alcohol
been found to be an efficient catalyst for the disproportionation of allylicalcohols, which provides a convenient method for selective transformation of allylicalcohols to alkenes and α,β-unsaturated ketones. Furthermore, this catalytic system is also effective for highly selective allylicreduction of allylicalcohols, allylic ethers, and allylic acetates with benzyl alcohol under neutral and convenient
Gas-Phase Pyrolytic Reaction of 4-Aryl-3-buten-2-ols and Allyl Benzyl Ethers: Kinetic and Mechanistic Study
作者:Alya M. Al-Etaibi、Nouria A. Al-Awadi、Maher R. Ibrahim、Yehia A. Ibrahim
DOI:10.3390/molecules15010407
日期:——
2-dihydronaphthalene derivatives (where X is H, MeO); FVP of 1-aryl-3-benzyloxy1-1-butenes and benzyl cinnamyl ethers [ArCH=CHCH(X)OCH2Ph, where Ar is phenyl, p-MeO, p-Me, p-Cl, X is H, Me, Ph] gave the corresponding but-2-en-1-ylbenzene derivatives (ArCH2CH=CH-X, where X is H, Me, Ph) together with benzaldehyde. The proposed mechanism of these pyrolytic transformations was supported by kinetic and product
4-芳基-3-丁烯-2-醇的快速真空热解 (FVP) [ArCH=CH-CH(CH3)OH,其中 Ar 是苯基、p-MeO、p-Me、p-Cl、p-NO2]得到相应的丁-1,3-二烯-1-基苯(ArCH=CH-CH=CH2,其中Ar是Ph、p-MeO、p-Me、p-Cl、p-NO2)和7-X-1 ,2-二氢萘衍生物(其中 X 为 H,MeO);1-芳基-3-苄氧基1-1-丁烯和苄基肉桂基醚的FVP [ArCH=CHCH(X)OCH2Ph,其中Ar是苯基、p-MeO、p-Me、p-Cl,X是H、Me、Ph ]与苯甲醛一起得到相应的丁-2-烯-1-基苯衍生物(ArCH2CH=CH-X,其中X是H、Me、Ph)。这些热解转化的拟议机制得到了动力学和产品分析的支持。
Potassium Base‐Catalyzed Michael Additions of Allylic Alcohols to α,β‐Unsaturated Amides: Scope and Mechanistic Insights
作者:Masahiro Sai、Hiroaki Kurouchi
DOI:10.1002/adsc.202100272
日期:——
We report herein the first KHMDS-catalyzed Michaeladditions of allylic alcohols to α,β-unsaturated amides through allylic isomerization. The reaction proceeds smoothly in the presence of only 5 mol% of KHMDS to afford a variety of 1,5-ketoamides in high yields. Mechanistic investigations, including experimental and computational studies, reveal that the KHMDS-catalyzed in-situ generation of the enolate