Facile Barton−McCombie Deoxygenation of Alcohols with Tetrabutylammonium Peroxydisulfate and Formate Ion
作者:Hee Sock Park、Hee Yoon Lee、Yong Hae Kim
DOI:10.1021/ol050886h
日期:2005.7.1
[reaction: see text]. A new method for efficient radical deoxygenation of alcohols is described for preparing bulk chemicals avoiding scale-up problems. Treatment of various thiocarbonyl derivatives with (Bu(4)N)(2)S(2)O(8) and HCO(2)Na in DMF afforded the corresponding deoxygenated products in excellent yields. The deoxygenation appears to be initiated by the transfer of a single electron to thiocarbonyl
Facile Reduction of Dithiocarbonates Derived from Secondary Alcohols with<i>n</i>-Bu<sub>3</sub>SnH–Et<sub>3</sub>B and Synthesis of 2-Furanthiones and 2-Furanones by Intramolecular Addition of Alkoxythiocarbonyl Free Radicals to Acetylenic Linkages
作者:Kyoko Nozaki、Koichiro Oshima、Kiitiro Utimoto
DOI:10.1246/bcsj.63.2578
日期:1990.9
reduction of dithiocarbonates or thiocarbonates by n-Bu3SnH–Et3B easily gives the corresponding hydrocarbons. The intermediate alkoxythiocarbonyl radical equivalents are trapped by properly located carbon–carbon multiple bonds. The dithiocarbonates derived from either homopropargylic or homoallylic alcohols produce tetrahydrofuranones upon treatment with n-Bu3SnH–Et3B. Application of this new method
Radical Deoxygenation of Alcohols<i>via</i>Their<i>S</i>-Methyl Dithiocarbonate Derivatives with Di-<i>n</i>-butylphosphine Oxide as Hydrogen Atom Donor
作者:Doo Ok Jang、Dae Hyan Cho、Derek H. R. Barton
DOI:10.1055/s-1998-1582
日期:1998.1
Various S-methyl dithiocarbonates of tertiary and secondary alcohols are readily deoxygenated in high isolated yields by radical deoxygenation with di-n-butylphosphine oxide and various radical initiators in boiling dioxane. Primary alcohols react similarly in boiling xylenes.