We report herein a regio‐ and stereoselective photocatalytic hydrogenolysis of allylicalcohols to form unsaturated hydrocarbons employing a palladium(II)‐loaded titanium oxide; the reaction proceeds at room temperature under light irradiation without stoichiometric generation of salt wastes. Olefin and saturated alcohol moieties tolerated the reaction conditions. Hydrogen atoms were selectively incorporated
Selective Deoxygenation of Allylic Alcohol: Stereocontrolled Synthesis of Lavandulol
作者:Hee Jin Kim、Liang Su、Heejung Jung、Sangho Koo
DOI:10.1021/ol200779y
日期:2011.5.20
Selective deoxygenation of allylicalcohol can be successfully carried out by the formation of alkoxyalkyl ether (EE or MOM), followed by Pd(dppe)Cl2-catalyzed reduction with LiBHEt3. (+)-S-Lavandulol has been efficiently synthesized by the application of this protocol to the diol derived from the Pb(OAc)4-promoted oxidative ring-opening of (−)-R-carvone. This deoxygenationmethod is general and selective
通过形成烷氧基烷基醚(EE或MOM),然后用LiBHEt 3催化Pd(dppe)Cl 2催化还原,可以成功地进行烯丙醇的选择性脱氧。通过将该方案应用于衍生自Pb(OAc)4促进的(-)- R-香芹酮的氧化开环的二醇,已有效地合成了(+)- S - Lavandulol。该脱氧方法对烯丙基醇是通用的和选择性的。