[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.
Production of Substituted Phenylene Aromatic Diesters
申请人:Leung Tak W.
公开号:US20100174105A1
公开(公告)日:2010-07-08
The present disclosure is directed to the production of 5-tert-butyl-3-methyl-1,2-phenylene dibenzoate and the purification thereof. Synthesis pathways for a precursor to 5-tert-butyl-3-methyl-1,2-phenylene dibenzoate are provided. The precursor is 5-tert-butyl-3-methylcatechol.
METHOD FOR PRODUCING CYCLIC SULFONIC ACID ESTER AND INTERMEDIATE THEREOF
申请人:Kuramoto Ayako
公开号:US20120130089A1
公开(公告)日:2012-05-24
The present invention is directed to provide an efficient production method which is capable of not only obtaining a cyclic sulfonic acid ester (sultone) at low cost and in high yield, but also the sulfonic acid ester (sultone) stably even in a commercial scale. The present invention relates to a method for producing hydroxysultone comprising a first step where a diol having a specified structure and a thionyl halide are reacted to obtain a cyclic sulfite having a specified structure, and a second step where the cyclic sulfite is reacted with water or/and alcohol; a method for producing an unsaturated sultone having a specified structure comprising a third step where a hydroxylsultone having a specified structure is reacted with an acid halide or an acid anhydride to obtain an intermediate, subsequently the intermediate is treated with a base; as well as a cyclic sulfite having a specified structure.
Processes for preparation of 2-alkyl-2adamantyl esters
申请人:——
公开号:US20030158437A1
公开(公告)日:2003-08-21
A magnesium halide salt of a 2-alkyl-2-adamantanol is reacted with a carboxylic acid halide such as acrylic chloride or the like in the presence of a tertiary amine to produce a 2-alkyl-2-adamantyl ester (the first invention).
A 2-alkyl-2-adamantanol is reacted with a carboxylic acid such as acrylic acid or the like in the presence of an acid catalyst such as concentrated sulfuric acid or the like and a drying agent composed of an acidic or neutral inorganic compound (e.g. magnesium sulfate) which is a solid at ordinary temperature in a dried state or of a water-absorbing high-molecular compound, to produce a 2-alkyl-2-admantyl ester (the second invention).
The above ester is important as a raw material for a resist for semiconductor production.
Method for racemization of optically active chrysanthemic acid or its derivatives
申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:EP0299760A1
公开(公告)日:1989-01-18
Optically active chrysanthemic acid or its derivatives of the formula
(wherein X represents a hydroxyl group, a halogen atom, a C₁₋₂₀ alkoxy group or a 2,2-dimethyl-3-isobutenyl-cyclopropane carboxyl group and * mark shows asymmetric carbon atom) is racemized by allowing it to react with a bromine compound or a SH compound, in the presence of light.
光学活性菊酸或其衍生物,其式为
(其中 X 代表羟基、卤素原子、C₁₋₂₀烷氧基或 2,2-二甲基-3-异丁烯基环丙烷羧基,* 标记表示不对称碳原子)在光照下与溴化合物或 SH 化合物反应,使其发生外消旋化。