Synthesis of Enantiopure Benzyl Homoallylamines by Indium-Mediated Barbier-Type Allylation Combined with Enzymatic Kinetic Resolution: Towards the Chemoenzymatic Synthesis of N-Containing Heterocycles
作者:Ari Hietanen、Tiina Saloranta、Sara Rosenberg、Evelina Laitinen、Reko Leino、Liisa T. Kanerva
DOI:10.1002/ejoc.200901216
日期:2010.2
N-(dimethylsulfamoyl)-protected aldimines with a number of allyl bromides followed by high-yielding deprotection afforded allylic amines in good to excellent yields. The racemic amines were then subjected to enzymatic kinetic resolution in order to obtain the corresponding (S)-amines and (R)-amides. When acyl donors with a terminal double bond were applied in the enzymatic kinetic resolution, the product amide
Homoallylic amines by reductive inter- and intramolecular coupling of allenes and nitriles
作者:Peter Wipf、Marija D Manojlovic
DOI:10.3762/bjoc.7.94
日期:——
The one-pot hydrozirconation of allenes and nitriles followed by an in situ transmetalation of the allylzirconocene with dimethylzinc or zinc chloride provides functionalized homoallylic amines. An intramolecular version of this process leads to 3-aminotetrahydrofurans and 3-aminotetrahydropyrans.
Concentrés émulsionnables de matières biocides, les microémulsions aqueuses obtenues et l'application de ces microémulsions au traitement du bois
申请人:XYLOCHIMIE
公开号:EP0328466A1
公开(公告)日:1989-08-16
Concentrés liquides émulsionnables dans l'eau qui comprennent : A) une matière active à base de substances fongicides consistant dans un dérivé du triazole et un sel d'ammonium quaternaire et B) un véhicule liquide constitué par un milieu de dissolution de la matière active et éventuellement un additif à base d'huile(s) et/ou d'agents(s) de fixation, caractérisé en ce que la matière active contient en outre une troisième substance fongicide consistant dans un dérivé benzimidazole et le milieu de dissolution comprend deux solvants obligatoires consistant dans le couple éther d'alcanol et de diol/acide carboxylique.
Application de ces concentrés à la préparation de microémulsions aqueuses utilisables pour la protection du bois.
Liquid sanitizing and cleaning compositions with diminished skin irritancy comprise a nonionic surfactant and a di-(lower-alkyl)-long-chain-alkylbenzylammonium benzoate or a di-(lower-alkyl)-di-(long-chain-alkyl)-ammonium benzoate, the latter being produced either by ion exchange of the corresponding quaternary ammonium halide with benzoate or by mixing the quaternary ammonium halide with at least about one molar equivalent of an alkali metal benzoate, in water.