Rhenium-Catalyzed Coupling of Propargyl Alcohols and Allyl Silanes
作者:Michael R. Luzung、F. Dean Toste
DOI:10.1021/ja039124c
日期:2003.12.1
the high oxidation state rhenium complex allows for simple reisolation and reuse of the catalyst. A broad range of functional groups is tolerated including aryl halides, olefins, esters, and acid-labile functional groups such as acetals. Furthermore, displacement of the alcohol occurs preferentially even in the presence of other electrophiles such as primary alkyl halides and conjugated esters. The use
Gold-catalyzed nucleophilicsubstitution on propargylicalcohols, with various C-, O-, and S-nucleophiles, is described under very mild conditions (room temperature, dichloromethane) in 0-97% yield.
A General and Efficient FeCl<sub>3</sub>-Catalyzed Nucleophilic Substitution of Propargylic Alcohols
作者:Zhuang-ping Zhan、Jing-liang Yu、Hui-juan Liu、Yuan-yuan Cui、Rui-feng Yang、Wen-zhen Yang、Jun-ping Li
DOI:10.1021/jo061234p
日期:2006.10.1
A general and efficient FeCl3-catalyzed substitution reaction of propargylicalcohols with carbon- and heteroatom-centered nucleophiles such as allyl trimethylsilane, alcohols, aromatic compounds, thiols, and amides, leading to the construction of C−C, C−O, C−S and C−N bonds, has been developed.
Gold(III)-catalyzed direct nucleophilic substitution of propargylic alcohols
作者:Marie Georgy、Valérie Boucard、Olivier Debleds、Christophe Dal Zotto、Jean-Marc Campagne
DOI:10.1016/j.tet.2008.12.051
日期:2009.2
Gold-catalyzed nucleophilicsubstitution of propargylicalcohols with various nucleophiles (allylsilane, electron-rich aromatics, alcohols, thiols, hydrides, 1,3-dicarbonyl derivatives, sulfonamides) is described under very mild conditions (room temperature in dichloromethane). Preliminary mechanistic investigations suggest a mechanism through a carbocation intermediate. Nucleophilicsubstitutions on allylic
Calcium-Catalyzed Direct Coupling of Alcohols with Organosilanes
作者:Vera J. Meyer、Meike Niggemann
DOI:10.1002/ejoc.201100231
日期:2011.7
A calcium-catalyzeddirect substitution of π-activatedalcohols with different organosilanes under very mild reaction conditions is presented. The high reactivity of the calcium catalyst allows efficient conversion of secondary and tertiary allylic, secondary benzylic, and tertiary propargylic alcohols with allyltrimethylsilane at room temperature. Furthermore, the first direct substitution of an alcohol