Cycloisomerization of Dienes with Carbophilic Lewis Acids: Mimicking Terpene Biosynthesis with Pt(II) Catalysts
摘要:
Dicationic Pt(II) complexes containing triphosphine pincer ligands are excellent catalysts for the cycloisomerization of 1,6- and 1,7-dienes into bicyclopropane carbocycles. In analogy to the biosynthetic route to these monoterpene-like compounds, carbocation intermediates are proposed and supported by trapping experiments. Reactivation of the trapped intermediates indicates that cation generation by C-C bond formation is both rapid and reversible.
DOI:
10.1021/ol051277c
作为产物:
描述:
alkaline earth salt of/the/ methylsulfuric acid 在
Lindlar's catalyst 、 lead containing palladium 、 Petroleum ether 作用下,
生成 6-苄氧基-2,6-二甲基-2,7-辛二烯
参考文献:
名称:
Unsaturated tertiary ethers and preparation thereof
A regiospecific method for the hydrocyanation of olefins
作者:Stephen L. Buchwald、Susan J. LaMaire
DOI:10.1016/s0040-4039(00)95711-3
日期:1987.1
A convenient method for the anti-Markovnikov hydrocyanation of olefins utilizing organozirconium chemistry has been developed. This method has been shown to tolerate a wide range of functionality in the substrate olefin.
BUCHWOLD S. L.; LA MAIRE S. J., TETRAHEDRON LETT., 28,(1987) N 3, 295-298
作者:BUCHWOLD S. L.、 LA MAIRE S. J.
DOI:——
日期:——
[EN] SAFE, ECO-FRIENDLY, HEALTH PROTECTIVE HERBAL COLOURS AND AROMA USEFUL FOR COSMACEUTICAL APPLICATIONS<br/>[FR] COLORANTS ET AROMES D'ORIGINE VEGETALE, ECOLOGIQUES ET SANS DANGER, PRESENTANT UN EFFET PROTECTEUR POUR LA SANTE, ET UTILES DANS DES APPLICATIONS COSMECEUTIQUES
申请人:COUNCIL SCIENT IND RES
公开号:WO2002078652A1
公开(公告)日:2002-10-10
The invention relates to a novel safe and eco-friendly health protective and beauty enhancing herbal compositions having various cosmetic applications such as lipsticks, eye shadows, glow-glitters and rouges, said compositions containing colourants from plants of the family Boraginaceae, the invention also provides a method for preparing the said compositions. The invention also relates the use of lipsticks as a medium of aromatherapy.
Unsaturated tertiary ethers and preparation thereof
申请人:HOFFMANN LA ROCHE
公开号:US02841620A1
公开(公告)日:1958-07-01
Cycloisomerization of Dienes with Carbophilic Lewis Acids: Mimicking Terpene Biosynthesis with Pt(II) Catalysts
作者:William D. Kerber、Michel R. Gagné
DOI:10.1021/ol051277c
日期:2005.7.1
Dicationic Pt(II) complexes containing triphosphine pincer ligands are excellent catalysts for the cycloisomerization of 1,6- and 1,7-dienes into bicyclopropane carbocycles. In analogy to the biosynthetic route to these monoterpene-like compounds, carbocation intermediates are proposed and supported by trapping experiments. Reactivation of the trapped intermediates indicates that cation generation by C-C bond formation is both rapid and reversible.