d5-Reactions of Doubly Deprotonated ?,?-Unsaturated Carbonyl Derivatives with Electrophiles. A Novel Approach to the Synthesis of Tetrahydrofuran and Tetrahydropyran Derivatives
作者:Dieter Seebach、Manat Pohmakotr、Christian Schregenberger、Beat Weidmann、Raghao S. Mali、Srisuke Pohmakotr
DOI:10.1002/hlca.19820650202
日期:1982.3.17
tested (alkyl halide, silyl chloride, ester, ketone, aldehyde, epoxide) to give β, γ-unsaturated carbonyl compounds of type A (see Formulae2–6, 13, 14 and Tables 1–5). The α- and β-hydroxyalkylation products obtained from 1a–1d can be converted to tetra-hydrofuran and tetrahydropyran derivatives 7 and 16, respectively (Tables 1 and 2), those from the sulfur analogues 1e and 1f to ketene thioacetals