The Cannizzaro reaction (Scheme 3), in which a nonenolizable aldehyde (22) disproportionates in the presence of strong base, usually NaOH, to an acid (25) and alcohol (26), is one of the longest known organic reactions. The crossed version wherein excess formaldehyde is used as the red...
1. Energy-saving technical transformation on the production unit of alkyl benzene sulfonic acid with sulfur trioxide as sulfonating agent was studied. 对气体SO3作为磺化剂生产烷基苯磺酸的生产装置进行节能改造。更多例句>> 2) dodecylbenzene sulfonic acid 十二烷基苯磺酸 1. The preparation and ...
Benzene sulfonic acidIn this paper, two aminated post-cross-linked polystyrene resins, PSAMPpc and PSAPpc, were correspondingly synthesized from macroporous chloromethylated polystyrene beads (PS-Cl) via a two-step process with amination reaction and Friedel-Crafts reaction. The structures of the ...
3) acid leather yellow pgw 金莲橙O(酸性橙6)4) methyl orange Ⅳ 金莲橙Ⅳ 1. In acidic medium, Mo (Ⅵ) has strong catalytic effect on the slow redox reaction of (NH2NH2)2SO4 and methyl orange Ⅳ, and the catalytic reaction can be quenched with NaOH solution based on the ...
The present invention relates to benzenesulfonic acid salts of clopidogrel, including crystalline clopidogrel besylate in form III, processes for the preparation of these salts, the
The above-mentioned acid is obtained by sulfating an alkylbenzene having 10-16 average number of carbon atoms. NaOH, KOH, etc., are used as the alkali employed for the neutralization. A high shearing type kneader, e.g. a continuous kneader (KRC Kneader(R)), manufactured by Kurimoto Ltd....
The above-mentioned acid is obtained by sulfating an alkylbenzene having 10-16 average number of carbon atoms. NaOH, KOH, etc., are used as the alkali employed for the neutralization. A high shearing type kneader, e.g. a continuous kneader (KRC Kneader(R)), manufactured by Kurimoto Ltd....
(A) Cpds. of the general formula (I) R' = (1-4C)alkyl, (3-4C) alkenyl or (5-7C) cycloalkyl R2 = H, Me or Et X = H, F, Cl, Br, Me, MeS, MeO or CH3CO (B) Acid addn. salts of I. Oral and parenteral hypoglycaemics. Dose 100-500 mg/d. N-(2-methylaminoethyl)-...
Industrial-grade dodecylbenzene and fat acyl chloride are taken as raw materials, and the long-chain alkyl acyl benzene sulfonic acid sodium salt is prepared by carrying out acidylating reaction, sulfonation reaction and neutralization reaction on the raw materials. Experiments show that dodecyl ...
;CONSTITUTION: An acyloxybenzene sulfonic acid is neutralized with a solid alkali agent such as KOH or NaOH having an average particle diameter of ≤300μm in a nonaqueous solvent such as dichloromethane, dichloroethane or carbon disulfide at 15-40°C under a condition that the water content ...