An Efficient One-Pot Conversion of THP- and TMS Ethers to Sulfonate Esters Using FeCl<sub>3</sub>-Montmorillonite K-10 Clay
作者:Barahman Movassagh、Salman Shokri
DOI:10.1515/znb-2005-0711
日期:2005.7.1
Various tetrahydropyranyl and trimethylsilyl ethers are efficiently transformed into the corresponding sulfonate esters with sulfonyl chlorides in the presence of FeCl3-Montmorillonite K-10 clay.
Alkylation of enamines of bis(ethylthio)acetaldehyde: synthesis of norpyrenophorin
作者:Gordon S. Bates、S. Ramaswamy
DOI:10.1039/c39800000904
日期:——
Alkylation of the potassium anion of the glyoxal derivatives (4) with halides and sulphonate esters, followed by acidic hydrolysis, provides good yields of the corresponding pyruvaldehyde α-thioacetals.
[EN] ACTINIC RAY-SENSITIVE OR RADIATION-SENSITIVE RESIN COMPOSITION AND METHOD OF FORMING PATTERN WITH THE COMPOSITION<br/>[FR] COMPOSITION DE RÉSINE SENSIBLE AUX RAYONS ACTINIQUES OU AU RAYONNEMENT ET PROCÉDÉ DE FORMATION DE MOTIFS AU MOYEN DE LA COMPOSITION
申请人:FUJIFILM CORP
公开号:WO2010035905A1
公开(公告)日:2010-04-01
An actinic ray-sensitive or radiation-sensitive resin composition comprising any of the compounds of general formula (I) below; wherein: Ar represents an aromatic ring that may have a substituent other than the -(A-B) groups; n is an integer of 1 or greater; A represents any one, or a combination of two or more members selected from a single bond, an alkylene group, -O-, -S-, -C(=O)-, -S(=O)-, -S(=O)?2- and OS(=O)2-, provided that -C(=O)O- is excluded; B represents a group containing a hydrocarbon group having 4 or more carbon atoms wherein either a tertiary or a quaternary carbon atom is contained, when n is 2 or greater, the two or more -(A-B) groups may be identical to or different from each other; and M+ represents an organic onium ion.
Visible-light-induced one-pot synthesis of sulfonic esters <i>via</i> multicomponent reaction of arylazo sulfones and alcohols
作者:Truong Giang Luu、Tien Tan Bui、Hee-Kwon Kim
DOI:10.1039/d2ra02656b
日期:——
Sulfonic ester is a chemical structure common to many organic molecules, including biologically active compounds. Herein, a visible-light-induced synthetic method to prepare aryl sulfonic ester from arylazo sulfones was developed. In the present study, a one-pot reaction was carried out using arylazo sulfones, DABSO (DABCO·(SO2)2), and alcohols in the presence of CuI as a coupling catalyst and HCl
A process for producing an aniline derivative represented by general formula (3) by reacting a halogenated aminophenol derivative represented by general formula (1) or a carbonate derivative thereof with an alkylating agent of the formula (R-Y) in the presence of a phase-transfer catalyst in a bilayered system composed of an aqueous solution of an alkali metal hydroxide and an organic solvent, wherein R represents (substituted) C₃-C₁₂ cycloalkyl or C₃-C₆ alkynyl; or a process for producing an aniline derivative represented by general formula (3) by reacting an aminophenol derivative represented by general formula (1) with an alkylating agent in the presence of an alkali metal carbonate in an organic solvent. The process enables an intermediate for producing an oxazolidinedione derivative useful as the active ingredient of a herbicide to be efficiently produced without the necessity for protecting the amino group.
一种生产通式(3)代表的苯胺衍生物的工艺,其方法是在碱金属氢氧化物水溶液和有机溶剂组成的双层体系中,在相转移催化剂存在下,使通式(1)代表的卤代氨基苯酚衍生物或其碳酸盐衍生物与式(R-Y)的烷化剂反应、其中 R 代表(取代的)C₃-C₁₂ 环烷基或 C₃-C₆ 烷基;或通式(3)代表的苯胺衍生物的生产工艺,其方法是在有机溶剂中,在碱金属碳酸盐存在下,使通式(1)代表的氨基苯酚衍生物与烷化剂反应。该工艺可以有效地生产出一种用于生产可用作除草剂活性成分的噁唑烷二酮衍生物的中间体,而无需保护氨基。