Selective Oxidation of Alcohols with Alkali Metal Bromides as Bromide Catalysts: Experimental Study of the Reaction Mechanism
作者:Katsuhiko Moriyama、Misato Takemura、Hideo Togo
DOI:10.1021/jo5008064
日期:2014.7.3
A bromide-catalyzedoxidation of alcohols was developed which proceeded in the presence of an alkali metal bromide and an oxidant under mild conditions. The reaction involved an organic-molecule-free oxidation using KBr and Oxone and a Brønsted acid assisted oxidation using KBr and aqueous H2O2 solution to provide a broad range of carbonylcompounds in high yields. Moreover, the bromide-catalyzed oxidation
开发了溴化物催化的醇的氧化反应,该氧化反应在碱金属溴化物和氧化剂的存在下于温和的条件下进行。该反应涉及使用KBr和Oxone进行无有机分子的氧化,以及使用KBr和H 2 O 2水溶液进行布朗斯台德酸辅助氧化,以高收率提供各种羰基化合物。而且,在TEMPO存在下,在两种反应条件下,溴化物催化的伯醇的氧化使得羧酸和醛的发散合成成为可能。在各种机理研究的基础上,提出了一种可能的催化机理。
Alkyl sulphooxyalkanoate compounds and compositions
申请人:UNILEVER N.V.
公开号:EP0530866A1
公开(公告)日:1993-03-10
The invention relates to novel sulfooxy alkanoates surfactants
in which a portion of the surfactant molecule has a so-called "benefit reagent" function, and compositions containing these surfactants. It is believed that this benefit reagent portion comes to play when the surfactant metabolized or hydrolyzed.
The surfactants used in these compositions are calcium ion insensitive, show mildness benefits and foam well. Thus the surfactants have been demonstrated to be useful surfactant in addition to delivering a beneficial reagent.
Polyisocyanide Derivative Having Controlled Helical Main Chain Structure
申请人:Okoshi Kento
公开号:US20090030227A1
公开(公告)日:2009-01-29
The object is to provide: a method for producing a polymer having a stable right-handed or left-handed helical structure from a single type of monomer in a per-selective manner and controlling the proportion between a polymer having the right-handed helical structure and a polymer having the left-handed helical structure; and a polymeric material which can be used for the formation of any of the right-handed and left-handed helical structures. Thus, disclosed are: a method for production of a polyisocyanide derivative having a stable helical main chain structure with a right-handed or left-handed helix or a mixture thereof from a single type of monomer by polymerizing an aromatic isocyanate having a substituent harboring a structure —CONH in the aromatic ring and a hydrophobic moiety having 6 or more carbon atoms in a polymerization solvent, wherein the direction of the helix depends on the polarity of the polymerization solvent; a poly(aromatic isocyanide) derivative produced by the method; and an aromatic isocyanide which is useful as a monomer for use in the production of the poly(aromatic isocyanide) derivative.
Compositions comprising alkyl sulfooxyalkanoate compounds containing a
申请人:Lever Brothers Company, Division of Conopco, Inc.
公开号:US05366665A1
公开(公告)日:1994-11-22
The present invention relates to personal product compositions selected from the group consisting of soap bar compositions, facial or body cleansing compositions, shampoo compositions, conditioner compositions, cosmetic compositions, dental compositions, and underarm deodorant/anti-perspirant compositions comprising specific alkyl sulfooxy alkanoate surfactant compounds. A portion of the alkyl sulfooxy alkanoate surfactants contains a "benefit reagent" which forms when the molecule is metabolized by enzymes on the body or elsewhere or which forms when the surfactant spontaneously hydrolyses on the skin surface.