Influence of water in the AlCl3-catalysed reaction of unsaturated azlactones with aromaticsThe bonding in the molecule ion VO(H2O)(5)(2+) is described in terms of molecular orbitals. In particular, the most significant feature of the electronic structure of VO2+ seems to be the existence of ...
the orange crystal product was easily obtained from the water system and the reaction process saved the reagent and the time , reduced the environment pollution.%以无水三氯化铝(AlCl3)为催化剂,对氯苯甲酰氯和苯甲醚为起始原料,经过Friedel-Crafts酰基化反应,去甲基反应,水解反应等过程合成了4-羟基-4'-...
both Brönsted acid and Lewis acid sites,and exhibited high catalytic activity in synthesis of bisphenol F. With m-HAP-P/Al loaded aluminium chloride 1.5 mmol/g as catalyst, under the optimal reaction conditions of temperature of 90℃, phenol/formaldehyde molar ratio of 15 and catalyst/formalde...
防腐作用,人们得以重视该 化合物的性质并开始了化学法制备. 通过在食品、 饲料、果品、蔬菜鱼肉的防腐保鲜中应用证明,该 化合物毒性低,大鼠急性口服半致死量 LD 50 为 1 250 mg / kg ,广谱高效,即使在浓度为10 - 6 mOl / L 时仍可抑制30 多种霉菌生长,因而成为目前市场 代替丙酸、苯甲酸、山梨酸及其盐...
reaction mixture was stirred. The exothermic reaction kept the mixture refluxing. When the refluxing stopped, the mixture was stirred for another 15 min, and ethyl acetate (53 mL, 0.55 mol) was added dropwise to decompose excess reagent. The mixture was poured onto ice (300 g) and NH 4 ...
The reaction conditions for synthesis of iso-amyl acetate are studied from acetic acid and iso-amyl alcohol upon strong acid cation exchange resin as a catalyst and cyclohexane as water-carrying agent. 研究了以强酸性阳离子交换树脂为催化剂,环己烷作带水剂,冰醋酸与异戊醇合成乙酸异戊 酯的反应条件...
What determines if a molecule will have 1 or more double bonds? Explain. What is the Lewis structure of SO2Cl2? Why does a primary carbocation follow a bimolecular reaction? How to find valence electrons for Lewis structureExplore our homework questions and answers library Search Browse Browse...
Used the means of NMR and IR,the reaction mechanism of carbonylation for toluene is studied at usingAlCl_3as catalyst without addition agent. 利用核磁及红外等表征方法,研究了无助剂存在时,AlCl3作催化剂的甲苯羰基化反应机理。 3. The monocyanoethylchloroaniline or dicyanoethylchloroaniline was synthesized...
Zn-AlCl3 · 6H2OVicinal diols have been prepared in good yield by pinacol coupling reaction of aromatic aldehydes and ketones with commercially available zinc and AlCl3·6H2O in water.doi:10.1080/00397911003797833Binod Kumar HazarikaDilip Kumar Dutta...
reaction mixture was stirred. The exothermic reaction kept the mixture refluxing. When the refluxing stopped, the mixture was stirred for another 15 min, and ethyl acetate (53 mL, 0.55 mol) was added dropwise to decompose excess reagent. The mixture was poured onto ice (300 g) and NH 4 ...