Alkynes as Allylmetal Equivalents in Redox-Triggered C–C Couplings to Primary Alcohols: (<i>Z</i>)-Homoallylic Alcohols via Ruthenium-Catalyzed Propargyl C–H Oxidative Addition
作者:Boyoung Y. Park、Khoa D. Nguyen、Mani Raj Chaulagain、Venukrishnan Komanduri、Michael J. Krische
DOI:10.1021/ja505962w
日期:2014.8.27
The cationic ruthenium catalyst generated upon the acid–base reaction of H2Ru(CO)(PPh3)3 and 2,4,6-(2-Pr)3PhSO3H promotes the redox-triggered C–C coupling of 2-alkynes and primaryalcohols to form (Z)-homoallylic alcohols with good to complete control of olefin geometry. Deuterium labeling studies, which reveal roughly equal isotopic compositions at the allylic and distal vinylic positions, along with
One-Pot Synthesis of Substituted Homoallylic Alcohols (3-Alkenols) and 1-Deuterio-3-alkenols; II.<sup>1</sup>Extension to Ketone Enolates
作者:José Barluenga、Flora Alvarez、José M. Concellón、Pablo Bernad、Miguel Yus
DOI:10.1055/s-1987-27933
日期:——
The reaction of different lithium ketone enolates with α-chloro carbonyl compounds followed by in situ reduction with lithium aluminium hydride or deuteride and final lithiation with ltihium powder leads to the corresponding homoallylic or 1-deuterio homoallylic alcohols in a regioselective manner.