Study on the coupling of acyclic esters with alkenes – the synthesis of 2-(2-hydroxyalkyl)cyclopropanols via cascade cyclization using allylsamarium bromide
Scandium Triflate Catalyzed Allylation of Acetals and <i>gem</i>-Diacetates: A Facile Synthesis of Homoallyl Ethers and Acetates
作者:Jhillu S. Yadav、Basi V. Subba Reddy、P. Srihari
DOI:10.1055/s-2001-13379
日期:——
Scandium triflate catalyzes efficiently the allylation reactions of acetals and gem-diacetates with allyltrimethylsilane at ambient temperature to afford the corresponding homoallyl ethers and acetates in high yields. Also it is found to be effective for the direct formation of homoallyl ethers from aldehydes and allylsilane in presence of trimethylorthoformate.
to be an efficient catalyst for allylation and cyanation of aldehydes with allyltrimethylsilane and trimethylsilyl cyanide in the presence of aceticanhydride at room temperature to produce homoallylic acetates and α-cyano acetates in excellent yields. A solution of 10 mol % of LiBF4 in acetonitrile provides a convenient reaction medium to carry out allylation and cyanation reactions under very mild
Indium(III) Chloride Catalyzed Allylation of<i>gem</i>-Diacetates: A Facile Synthesis of Homoallyl Acetates
作者:J. S. Yadav、B. V. Subba Reddy、Ch. Madhuri、G. Sabitha
DOI:10.1246/cl.2001.18
日期:2001.1
Indium(III) chloride is found to catalyze efficiently the allylation of gem-diacetates with allyltrimethylsilane at room temperature to afford the corresponding homoallylic acetates in high yields with good regioselectivity.
Indium-mediated allylation of gem-diacetates gave excellent yields of the corresponding homoallylic acetates in aqueous media. (C) 2000 Elsevier Science Ltd. All rights reserved.