Facile O-H insertion reactions of alpha-diazo ketones with alcohols or benzenethiol have been developed in the presence of indium triflate as a catalyst. These reactions provided good yields of alpha-alkoxy ketones. A comparative study with other Lewis acids establishes the reactivity of indium triflate in O-H insertion reactions of alpha-diazo ketones. (C) 2002 Elsevier Science Ltd. All rights reserved.
PHOTOLABILE DUFTSTOFFVORLÄUFERVERBINDUNG
申请人:Henkel AG & Co. KGaA
公开号:EP3233781B1
公开(公告)日:2019-08-28
PHOTOLABILE FRAGRANCE PRECURSOR COMPOUND
申请人:Henkel AG & Co. KGaA
公开号:US20170349858A1
公开(公告)日:2017-12-07
The invention relates to specific phenacyl ethers of formula (I), as defined herein, which can be used as photolabile pro-fragrances. The invention further relates to washing and cleaning agents, cosmetic agents, and air freshening agents containing such phenacyl ethers, and a method for the long-lasting scenting of surfaces.
Die Erfindung betrifft spezielle Phenacylether der Formel (I), wie hierin definiert, die als photolabile Duftspeicherstoffe eingesetzt werden können. Ferner betrifft die vorliegende Erfindung Wasch- und Reinigungsmittel, kosmetische Mittel sowie Luftpflegemittel, welche solche Phenacylether enthalten sowie ein Verfahren zur lang anhaltenden Beduftung von Oberflächen.
Non-Carbonyl-Stabilized Metallocarbenoids in Synthesis: The Development of a Tandem Rhodium-Catalyzed Bamford−Stevens/Thermal Aliphatic Claisen Rearrangement Sequence
作者:Jeremy A. May、Brian M. Stoltz
DOI:10.1021/ja028020j
日期:2002.10.1
Bamford-Stevens/Claisenrearrangement is presented. The tandem reaction uses Eschenmoser hydrazones for the in situ generation of non-carbonyl-stabilized diazo alkanes, which are presumably intercepted by Rh(II) catalysts to induce a 1,2-hydride migration. This sequence provides high levels of stereocontrol for the generation of simple acyclic (Z)-enol ethers. These enol ethers undergo either thermal or Lewis