alcohol soluble adj. 酒精溶解的 pentahydroxy alcohol 五元醇 alcohol dependent n. 酒依赖 alcohol free 不含酒精 alcohol sol resin 醇溶树脂 最新单词 binding coal的中文翻译及用法 粘结性煤,结块煤 binding clip的中文解释 接线夹,钳头 binding clause的中文翻译及用法 拘束条款,拘束条款 binding ...
An improvement in the preparation of orthosilicic acid tetraalkyl esters by reaction of metallic silicon with alcohol in the presence of alkali alcoholate is disclosed, the improvement residing in carrying out the reaction in the co-presence of an ether alcohol or alkanolamine as cocatalyst.收藏...
Microbiological oxidation of the 1-benzoyl derivative of (1) affords mostly the 5-hydroxy together with some of the 4-hydroxy derivative 〈68JOC3187〉. These products are best separated after oxidation to the respective ketones with CrO3. The 5-isomer (40) gives an ethylene ketal (41) which...
PURPOSE:A catalyst containing iron oxide and alumina at a specific ratio is used to effect the reaction of a phenol bearing a hydrogen on the ortho position with an alcohol, thus producing a phenol alkylated on the ortho position in high conversion and selectivity. CONSTITUTION:When a phenol be...
Company Name:Shandong Jinyueyuan New Material Co. LtdGold Tel:18615186228 Email:3404852510@qq.com Company Name:Shanghai Aladdin Bio-Chem Technology Co.,LTDGold Tel:400-400-6206333 18521732826 Email:market@aladdin-e.com Company Name:Shanghai Maclean Biochemical Technology Co., LTDGold ...
In an early stage of the polycondensation of phenol/formaldehyde (Ph/F) systems catalyzed by bivalent metal acetates (Me2+(ac)2), 2-hydroxy-benzylalcohol (2-OH-BA) formation was selective in the weak acidic medium and only in the presence of the catalyst. The concentration change in 2-...
2-hydroxy-3,5-dichlorophenyl, p-iodophenyl, 3,6-dichloro-4-aminophenyl, 4-fluoro-3-chlorophenyl, 2-fluoro-4-bromophenyl, 2,5-difluoro-4-bromophenyl, 3-bromo-6-methoxyphenyl, 3-chloro-6-methoxyphenyl, 3-chloro-4-acetamidophenyl, 3-fluoro-4-methoxyphenyl, 3-amino-6-methylphenyl, 3-chloro...
Regioselective Heterocyclization of 6-Cyclopent-2-enyl-5-hydroxy-1,3-dimethyl-pyrimidine-2,4( 1H, 3H)-d... 5-cyclopent-2-enyl-6-hydroxy-1,3-dimethylpyrimidine-2,4(1H,3H)-dione by reaction with pyridine hydrotribromide or hexamethylenetetramine hydrotribromide. ... Krishna,C.,Majumdar,......
Non-limiting examples of the at least one donor for the aryl alcohol oxidases include benzyl alcohol, 4-tert-butylbenzyl alcohol, 3-hydroxy-4-methoxybenzyl alcohol, veratryl alcohol, 4-methoxybenzyl alcohol, and cinnamyl alcohol. 2,4-hexadien-1-ol may also be used as the at least one donor...
The compounds of formula (III) may be made by reacting a 1,1,1-trialkoxy-2-halopropane with a 2-alkyl-2-hydroxymethylpropane-1,3-diol, e.g. trimethylolpropane or trimethylolethane according to the following scheme: ##STR8## The above reaction may be effected in the same manner as alre...