MnO<sub>2</sub> as a terminal oxidant in Wacker oxidation of homoallyl alcohols and terminal olefins
作者:Rodney A. Fernandes、Gujjula V. Ramakrishna、Venkati Bethi
DOI:10.1039/d0ob01344g
日期:——
PdCl2/CrO3/HCl produced α,β-unsaturated ketonesfrom homoallyl alcohols, the present method provided orthogonally the β-hydroxy-methyl ketones. No overoxidation or elimination of benzylic and/or β-hydroxy groups was observed. The method could be extended to the oxidation of simple terminalolefins as well, to methyl ketones, displaying its versatility. An application to the regioselective synthesis of gingerol is
作者:Alexis Theodorou、Ierasia Triandafillidi、Christoforos G. Kokotos
DOI:10.1002/ejoc.201601144
日期:2017.3.17
A cheap, green and metal-free one-pot procedure for the dihydroxylation of alkenes is described. H2O2 was employed as the oxidant and 2,2,2-trifluoroacetophenone as the organocatalyst, leading to a highly sustainable protocol, where a variety of homoallylic alcohols, amino-alkenes and double bonds were converted into the corresponding polyalcohols in high to excellent yields. This manifold takes advantage
Barbier-Type Allylation of Aldehydes and Ketones with Metallic Lead in Aqueous Media
作者:Jing-Yao Zhou、Yu Jia、Guang-Fu Sun、Shi-Hui Wu
DOI:10.1080/00397919708006791
日期:1997.6
Abstract Homoallylic alcohols can be obtainedfromallylation of aldehydes and ketones with allyl bromide promoted by metallic lead. These reactions can be carried out smoothly in aqueous media.
Rapid and Solvent-Free Synthesis of Homoallyl or Homopropargyl Alcohols Mediated by Zinc Powder
作者:Jin-xian Wang、Xuefeng Jia、Tuanjie Meng、Li Xin
DOI:10.1055/s-2005-872178
日期:——
A rapid and efficient procedure for the solvent-free synthesis of homoallylic and homopropargyl alcohols has been achieved by zinc-mediated Barbier-type reaction of carbonyl compounds at room temperature.
Allyliccarbonates were more active than the corresponding allylic acetates in carbonylallylationusingPdCl2(PhCN)2-SnCl2, and the carbonylallylation by (E)-crotyl carbonate at 10 °C exhibited opposite diastereo-selectivity (anti-selectivity) to that by (E)-crotyl acetate at 60 ° C.