The Synthesis of Internal Conjugated (<i>E</i>)-Enynyldialkylboranes and Their Applications to the Syntheses of Conjugated Alkynones, Conjugated (<i>E</i>)-Enynes, and Conjugated Enynes Bearing an Unsaturated Group on the Double Bond
作者:Masayuki Hoshi、Yuzuru Masuda、Akira Arase
DOI:10.1246/bcsj.58.1683
日期:1985.6
(E)-Enynyldialkylboranes, thus obtained, gave regio- and/or stereospecifically defined corresponding conjugated alkynones by alkaline hydrogen peroxide oxidation, conjugated (E)-enynes by protonolysis with acetic acid, and conjugated enynes bearing an unsaturated group on the internal alkenyl carbon atom by bis(acetylacetonato)copper-catalyzed cross-coupling reaction with allyl bromide or 1-bromo-1-hexyne respectively
NOVEL DEORDORISING COMPOSITIONS AND DEODORISING PRODUCTS CONTAINING SAME
申请人:Casazza André
公开号:US20120201778A1
公开(公告)日:2012-08-09
The invention relates to novel deodorant compositions containing at least one compound of the family of acetylenic ketones and the deodorant products containing them. A particularly preferred composition according to the invention comprises at least one compound of the family of the α-acetylenic ketones and a mixture of aldehydes chosen from two different families.
Polymeric tertiaryphosphine as a green and recyclable organocatalyst for stereoselective isomerization reaction
作者:Yugang Wang、Huanfeng Jiang、Hailing Liu、Peng Liu
DOI:10.1016/j.tetlet.2005.03.198
日期:2005.5
A green, simple and effective polymeric organocatalytic system, polymer-supported triphenylphosphine (PS-TPP), for the stereoselective isomerization of α,β-ynones to (E,E)-α,β-γ,δ-dienones is reported here. The catalyst, PS-TPP could be recovered by simple filtration and reused several times with high activity.
A novel stereoselective synthesis of (Z)-3-iodo-3-alken-1-one from 2-alkyn-1-one
作者:Fen-Tair Luo、K. Ajay Kumar、Li-Chen Hsieh、Ren-Tzong Wang
DOI:10.1016/s0040-4039(00)77168-1
日期:1994.4
A one-pot reaction of 2-alkyn-1-one with sodium iodide/acetonitrile/ttimethylsilyl chloride/water or trimethylsilyl iodide/acetonitrile at 25 degrees C gave almost exclusively (Z)-3-iodo-3-alken-1-one in good yields.
A Simple Synthesis of Alkynyl Ketones via Thexylchloroborane