Reactions of carbonyl compounds in the presence of phase-transition catalysts. 4. Study of the reaction of acetoacetic ester with 1-chloro-3-methyl-2-butene in the presence of various alkaline agents
Tertiary alkyl, allylic and benzylic halides react with zinc thiolacetate, prepared in situ, under optimised conditions to yield the corresponding thiolacetates in moderate to good yields.
Preparation and Reactivities of (η<sup>3</sup>-1- and 2-Trimethylsiloxyallyl)Fe(CO)<sub>2</sub>NO Complexes. Intermediates Functioning as Equivalents of β- and α-Acyl Carbocations and Acyl Carbanions
作者:Keiji Itoh、Saburo Nakanishi、Yoshio Otsuji
DOI:10.1246/bcsj.64.2965
日期:1991.10
(η3-1- and 2-Trimethylsiloxyallyl)Fe(CO)2NO complexes were prepared by the reaction of the corresponding siloxyallylic halides with Bu4N[Fe(CO)3NO]. These complexes reacted with both of carbon nucleophiles and carbon electrophiles preferentially at the less hindered sites of the allylic ligands. In these reactions, (η3-1-trimethylsiloxyallyl)Fe(CO)2NO complexes served as synthetically equivalent synthons
[EN] METHOD OF CONVERTING ALCOHOL TO HALIDE<br/>[FR] PROCÉDÉ DE CONVERSION D'UN ALCOOL EN HALOGÉNURE
申请人:UNIV SAARLAND
公开号:WO2016202894A1
公开(公告)日:2016-12-22
The present invention relates to a method of converting an alcohol into a corresponding halide. This method comprises reacting the alcohol with an optionally substituted aromatic carboxylic acid halide in presence of an N-substituted formamide to replace a hydroxyl group of the alcohol by a halogen atom. The present invention also relates to a method of converting an alcohol into a corresponding substitution product. The second method comprises: (a) performing the method of the invention of converting an alcohol into the corresponding halide; and (b) reacting the corresponding halide with a nucleophile to convert the halide into the nucleophilic substitution product.
Synthesis and properties of quaternary ammonium salts on the basis of piperidine
作者:R. R. Rakhmatullin、V. I. Levashova、T. F. Dekhtyar’
DOI:10.1134/s0965544113020102
日期:2013.3
Quaternaryammoniumsalts have been synthesized frompiperidine and alkenyl halides (4-chloropent-2-ene, 2-methyl-3-chlorobut-1-ene, 3-methyl-3-chlorobut-1-ene), and their structure has been confirmed. The optimal synthesis conditions have determined, and the product compounds have been to serve as efficient bactericides against sulfate-reducing bacteria.
Preparation of Bicyclic 1,2,4-Trioxanes from γ,δ-Unsaturated Ketones
作者:Armando P. Ramirez、Andrew M. Thomas、K. A. Woerpel
DOI:10.1021/ol8022853
日期:2009.2.5
Treatment of γ,δ-unsaturated ketones with hydrogen peroxide and acid provides a rapid entry into the medicinally important 1,2,4-trioxanestructure. Alkene substitution that stabilizes carbocationic intermediates proved to be important for the success of this transformation.