Ruthenium catalysed formation of 2-alkoxy-5-methylenetetrahydropyrans
作者:Sylvie Dérien、Beatriz Gomez Vicente、Pierre H. Dixneuf
DOI:10.1039/a702799k
日期:——
The regioselective carbon–carbon coupling of prop-2-yn-1-ols with
allyl alcohol is achieved in the presence of the ruthenium(II) catalyst
RuCl(cod)(C
5
Me
5
) and leads to either 2-hydroxy- or
2-allyloxy-5-methylenetetrahydropyrans.
在钌(II)催化剂 RuCl(cod)(C 5 Me 5 ) 的存在下,丙-2-炔-1-醇与烯丙醇实现了区域选择性碳-碳偶联,并生成 2-羟基或 2-烯丙氧基-5-亚甲基四氢吡喃。
Synthesis of 2-Alkoxy-5-methylenetetrahydropyrans: A Regioselective Ruthenium-Catalyzed C−C Coupling Reaction of Prop-2-yn-1-ols with Allyl Alcohol
作者:Sylvie Dérien、Loïc Ropartz、Jacques Le Paih、Pierre H. Dixneuf
DOI:10.1021/jo982300t
日期:1999.5.1
The carbon-carbon coupling of prop-2-yn-1-ols with allylalcohol is achieved in the presence of the ruthenium(II) catalyst RuCl(cod)(C(5)Me(5)). The coupling reaction is highly regioselective and leads to the HOCR(2)C(=CH(2))CH(2)CH(2)CHO isomer and, after cyclization, to either 2-hydroxy- or 2-alkoxy-5-methylenetetrahydropyrans, at room temperature or at 80 degrees C, respectively. It is used for