On the [2,3]-sigmatropic rearrangements of sulfenate esters derived from alkenynols: synthesis of vinylallene and vinylacetylene sulfoxides.
作者:Eugène M.G.A. van Kruchten、William H. Okamura
DOI:10.1016/s0040-4039(00)87011-2
日期:1982.1
The reactions of various alkenynols with phenylsulfenyl chloride result in the formation of either vinylallene sulfoxides or vnylacetylene sulfoxides, depending on the substitution pattern of the starting material.
Coinage Metals-Catalyzed Cascade Reactions of Aryl Alkynylaziridines: Silver(I)-Single vs Gold(I)-Double Cyclizations
作者:Nicolas Kern、Aurélien Blanc、Solène Miaskiewicz、Michelle Robinette、Jean-Marc Weibel、Patrick Pale
DOI:10.1021/jo300294r
日期:2012.5.4
Alkynylaziridines carrying an aryl group could be efficiently converted into aminoallenylidene isochromans, isoquinolines, or tetrahydronaphtalenes with silver(I) salts and into 1-azaspiro[4.5]decane derivatives with gold(I) complexes. Mechanistic investigations revealed that both Ag- and Au-catalyzed reactions involved a Friedel–Crafts type intramolecular reaction leading to an allene and that Au
Gold(i)-catalyzed rearrangement of aryl alkynylaziridines to spiro[isochroman-4,2′-pyrrolines]
作者:Nicolas Kern、Aurélien Blanc、Jean-Marc Weibel、Patrick Pale
DOI:10.1039/c1cc11351h
日期:——
Alkynylaziridines carrying an aryl group could be efficiently converted to spiro[isochroman-4,2'-pyrrolines] with gold salts as catalysts. This new rearrangement involved a Friedel-Craftstype intramolecular reaction followed by cyclization of the aminoallene intermediate, both initiated by the dual sigma and pi Lewis acidities of gold.
Preparation of siloxacyclopentene containing 1,3-dienes and their Diels–Alder reactions
作者:Ramakrishna R. Pidaparthi、Mark E. Welker
DOI:10.1016/j.tetlet.2007.08.133
日期:2007.10
A number of enynyloxy dimethyl and diisopropyl silanes have been prepared and converted into siloxacyclopentene containing 1,3-dienes via intramolecular hydrosilylation of the alkyne functional group. Diels–Alderreactions of these dienes are reported.
Compounds And Compositions Containing Silicon And/Or Other Heteroatoms And/Or Metals And Methods of Making And Using Them
申请人:Welker Mark E.
公开号:US20100056801A1
公开(公告)日:2010-03-04
The present invention relates to compounds, intermediates, compositions, and methods of making compounds and intermediates related to the compounds of Formula (I) and/or Formula (II) and/or Formula (III) and/or Formula (IV) and/or Formula (VI) and/or Formula (VII) as disclosed herein wherein the various substituents are as defined in the written description.