CAS: 354-24-5; Chlorodifluoroacetyl Chloride

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CAS号76-04-0 一氯二氟乙酸 | CAS号76-11-9 1,1,1,2-四氯-2,2-二氟乙烷 | CAS号354-21-2 1,2,2-三氯-1,1-二氟乙烷 | CAS号79-35-6 1,1-二氯-2,2-二氟乙烯 | CAS号4222-32-6 3-chloro-3-(chl... | CAS号359-13-7 2,2-二氟乙醇 | CAS号127-21-9 二氯四氟丙酮 | CAS号18328-79-5 chlorosulfonyld... | CAS号354-23-4 1,2-二氯三氟乙烷 | CAS号383-62-0 二氟氯乙酸乙酯 | CAS号381-73-7 二氟乙酸 | CAS号433-53-4 二氟乙酸甲酯 | CAS号1514-87-0 氯代二氟乙酸甲酯 | CAS号76-04-0 一氯二氟乙酸 | CAS号359-13-7 2,2-二氟乙醇 | CAS号219296-24-9 3-(氯二氟乙酰基)咪唑并[1... | CAS号7647-01-0 盐酸 | CAS号354-27-8 chlorodifluoroa... | CAS号64748-15-8 [4-[(2-chloro-2...

Alkaline Earth Salt Of/the/ Methylsulfuric Acid置于三氯化磷体系中,化学反应生成氯(二氟)乙酰氯
参考文献:α,β,β-Trifluorostyrene And α-Chloro-β,β-Difluorostyrene
标题:α,β,β-Trifluorostyrene And α-Chloro-β,β-Difluorostyrene
摘要:
Doi:10.1021/ja01178A052

专利信息

专利号:US-6252105-B1
优先权日:1998-07-06
标题:Synthesis of low-fluoride organic compounds
发明人：BRAUN MAX; EICHER JOHANNES; JANSSENS FRANCINE; EICHHOLZ KERSTIN; PALSHERM STEFAN
权利人:SOLVAY FLUOR & DERIVATE
摘要:Organic compounds, e.g. fluorinated organic compounds such as fluorinated carboxylic acids or fluorinated carboxylic acid chlorides, may contain small amounts of carboxylic acid fluorides, hydrogen fluoride or hydrolyzable fluoride, which during the preparation of derivatives of the fluorinated organic compounds, for example by esterification, may yield corrosive fluorides or hydrogen fluoride. The invention is a method for the synthesis and/or purification of preferably fluorinated organic compounds such as carboxylic acids, carboxylic acid chlorides and derivatives such as esters thereof, starting from corresponding carboxylic acid chlorides containing acid fluorides or hydrolyzable fluoride, and alcohols under the catalytic action of 'onium' salts of carboxylic acids, to obtain products which have a low fluoride content. Alternatively, an inorganic oxide adsorbent is utilized. The method is especially suitable for the synthesis of esters of trifluoroacetic acid, chlorodifluoroacetic acid, trifluoroacetoacetic acid and/or difluoroacetoacetic acid.

专利号:US-4756739-A
优先权日:1985-12-21
标题 :Pyridine derivatives and the N-oxides thereof, and the use thereof as intermediates for the synthesis of plant protecting agents
发明人：FUSS ANDREAS; KOCH VOLKER
权利人:HOECHST AG
摘要:The compounds of the formula I (I) in which A denotes N or N->O, Z denotes O or NH, R denotes H, (halo)alkyl, (halo)alkenyl, (halo)alkynyl or alkoxycarbonyl, R1 denotes hydrogen, halogen, amino, -NHOH, hydroxyl, (substituted) phenylazo or a radical of the formulae Y=C=N-, Y1Y2C=N-, Y3NH- or K denotes 0 or 1, and m and n, independently of one another, denote a number from 1 to 4, with the proviso that, when Z-R denotes OH or NH2, (R1)n denotes at least one radical of the formula or represents two radicals, in the 5 or 6 position of the heterocyclic ring, which, in the 5 position, denote halogen and, in the 6 position, denote a radical of the group comprising halogen, amino, hydroxyl or phenylazo, which may be substituted as specified above, are valuable intermediates in the synthesis of plant protection agents.

专利号:US-3950160-A
优先权日:1972-09-27
标题:Inhibiting the growth of weeds with 2-substituted pyrdidopyimidines and salts thereof
发明人：ABU EL-HAJ MARWAN J; DOMINY BERYL WILLIAM
权利人:PFIZER
摘要:2-Substituted pyridopyrimidines and their alkali and alkylamine salts as herbicides, and processes for the synthesis of starting materials leading to the preparation thereof.

专利号:US-8957254-B2
优先权日:2009-07-06
标题 :Process for chemical synthesis from an alkenone made from a halogenated precursor
发明人：BRAUN MAX; PALSHERM STEFAN; CLAASSEN UTA; LAMBERT ALAIN
权利人:BRAUN MAX; PALSHERM STEFAN; CLAASSEN UTA; LAMBERT ALAIN; SOLVAY
摘要:Process for synthesizing a chemical, in particular an agriculturally or pharmaceutically active compound, including: a first step comprising reacting a carboxylic acid halide with a vinyl ether to prepare a halogenated precursor of an alkenone; a second step comprising eliminating hydrogen halide from such precursor to form an alkenone, preferably by thermolysis under specific conditions; and a third step which uses the formed alkenone as a building block to synthesize the chemical. First step may be done in a liquid reaction medium comprising an alkenone or a halogenated alkenone precursor, or in a liquid reaction medium in turbulent state, specifically by creation of gas bubbles of the carboxylic acid halide herein. Second step may include a flash thermolysis, vacuum thermolysis, thermolysis under stripping with inert gas, and/or a thermolysis at a temperature from >90° C. to 120° C. Third step preferably comprises reacting the alkenone with a nitrogen-containing compound.

专利号:US-3962264-A
优先权日:1972-09-27
标 题:Process for making 2-amino nicotinonitrile
发明人：ABU EL-HAJ MARWAN J; DOMINY BERYL WILLIAM
权利人:PFIZER
摘要:2-Substituted pyridopyrimidines and their alkali and alkylamine salts as herbicides, and processes for the synthesis of starting materials leading to the preparation thereof.

专利号:US-3917624-A
优先权日:1972-09-27
标题:Process for producing 2-amino-nicotinonitrile intermediates
发明人：ABU EL-HAJ MARWAN J; DOMINY BERYL WILLIAM
权利人:PFIZER
摘要:2-Substituted pyridopyrimidines and their alkali and alkylamine salts as herbicides, and processes for the synthesis of starting materials leading to the preparation thereof.