However, examination of the reaction of aliphatic carboxylic acids under these standard conditions showed that only a trace amount of the desired product can be produced while both decarboxylative C–C coupling and direct C–O coupling can occur. Fig. 4: Carboxylic acid scope at a 0.2 mmol ...
Reaction is carried out over a new catalyst contg. 5-30 wt. % ZrO2 and/or ThO2 with the balance being anatase. (I) are useful as solvents and intermediates for dyes, plant protection agents and pharmaceuticals.doi:DE2758113 A1STROHMEYER,MAX,DIPL.-CHEM.DR....
CONSTITUTION:A carboxylic acid is subjected to the catalytic vapor-phase reaction using zirconium oxide as the catalyst at 300-500 deg.C to obtain 1 molecule of the corresponding ketone from 2 molecules of the carboxylic acid. The conversion, selectivity and catalyst life in the above reaction ...
摘要: Malonic acid derivatives(gem-dicarboxylic acids) were converted to the corresponding ketones by the electrolysis. The reaction was employed for the synthesis of jasmones.关键词: cyclopentane derivatives DOI: 10.1016/S0040-4039(01)87187-2 被引量: 1 ...
A simple example of a ketonic decarboxylation reaction and a proposed mechanism is presented in Figure 1. Here, a solid ceria catalyst was used to convert acetic acid (used as a model FFA) to acetone [9]. Inorganics 2018, 6, 121; doi:10.3390/inorganics6040121 www.mdpi.com/journal/...
Grignard Reaction The Grignard reaction is a reaction with a carbonyl and an organometallic reagent called the Grignard reagent. Carbonyls are an organic functional group where carbon is double-bonded to oxygen. This includes compounds such as ketones, aldehyde, carboxylic acids, and carboxylic acid ...
The conversion of cellulose was determined from the weight difference in the solid fraction before and after the reaction. Compared to P2, the peak of carboxylic acid (12.89 p.p.m.) disap- peared and the peaks of ethyl ester (4.33 and 1.35 p.p.m., with a ratio of 2:3) appeared, ...
The Haloform Reaction When a methyl ketone is halogenated in basic solution, the halogen replaces all three α hydrogen atoms. This trihaloketone reacts further, resulting in the cleavage of a carbon–carbon bond. After acidification, the products are a carboxylic acid and a trihalomethane know...
and it's the subject of another set of videos that can be found in your carboxylic acid derivatives chapter. But for right now, all I'm trying to say is that acid chlorides and esters when reacted with organometallics are going to react twice instead of reacting o...
Production and use of a reaction product from ascorbic acid with alpha, beta - unsaturated ketone or vinyl - aliphatic ketone. 来自 掌桥科研 喜欢 0 阅读量: 5 申请(专利)号: DE19873781366T 申请日期: 1987-04-15 公开/公告号: DE3781366T2 ...