Reversible chemoselective transetherification of vinylogous esters using Fe-catalyst under additive free conditions
作者:Nenavath Parvathalu、Sandip G. Agalave、Nirmala Mohanta、Boopathy Gnanaprakasam
DOI:10.1039/c9ob00307j
日期:——
An additive/Brønsted acid/base free, highly efficient and chemoselective transetherification of electron deficient vinylogousesters and water mediated de-alkylation using an earth-abundant Fe-catalyst under very mild reaction conditions is described. This reaction is highly selective to primary alcohols over secondary alcohols, has good functional group tolerance, is scalable to gram scale and a purification
Zinc-mediated Alkylation and Acylation of 1,3-Dicarbonyl Compounds
作者:J. S. Yadav、B. V. Subba Reddy、Anand Kumar Mishra
DOI:10.1246/cl.2010.280
日期:2010.3.5
1,3-Dicarbonyl compounds undergo smooth allylation, benzylation, propargylation, and acylation with halidesusing metallic zinc in DMF at 60 °C to afford the corresponding allyl, benzyl, 2-propynyl...
1,3-二羰基化合物在 60 °C 下在 DMF 中使用金属锌与卤化物进行平滑的烯丙基化、苄基化、炔丙基化和酰化,得到相应的烯丙基、苄基、2-丙炔基...
Tamura,Y. et al., Chemical and pharmaceutical bulletin, 1971, vol. 19, p. 571 - 575
作者:Tamura,Y. et al.
DOI:——
日期:——
Nasarow et al., Zhurnal Obshchei Khimii, 1956, vol. 26, p. 819,827; engl. Ausg. S. 939, 945
作者:Nasarow et al.
DOI:——
日期:——
Acid-catalyzed chemoselective C- and O- prenylation of cyclic 1,3-diketones
Abstract The chemoselective C- and O-prenylation of cyclic1,3-diketones was achieved by tuning the prenyl source and catalyst. In the presence of the solid acid Nafion, the coupling of 1,3-cyclohexanediones with isoprene gave C-prenylated 5-chromenones. Alternatively, using prenol as the substrate with the Lewis acid AlCl3 as the catalyst resulted in the exclusive O-prenylation of 1,3-cyclohexanediones