NMR Spectroscopic Study of the Aldoxane Formation in Aqueous Acetaldehyde Solutions
NMR Spectroscopic Study of the Aldoxane Formation in Aqueous Acetaldehyde Solutions
复制标题
乙醛水溶液中醛恶烷形成的核磁共振波谱研究
DOI:
10.1021/ie5004043
复制
发表时间:
2014
影响因子:
4.2
通讯作者:
H. Hasse
中科院分区:
文献类型:
--
作者:
A. Scheithauer;T. Grützner;C. Rijksen;D. Zollinger;E. von Harbou;W.R. Thiel;H. Hasse
Crotonaldehyde is an interesting intermediate in the chemical industry. It is usually produced from aqueous acetaldehyde in a two step process in which the first step is carried out under basic and the second step under acidic conditions. It is commonly assumed that acetaldehyde is converted in the first step to acetaldol and that acetaldol is subsequently dehydrated in the second step to crotonaldehyde. We demonstrate by1H and13C NMR spectroscopic studies that acetaldol is hardly present in the reacting solutions at lower temperatures and that the key intermediate is aldoxane (2,6-dimethyl-1,3-dioxane-4-ol). For the first time, data on the chemical equilibrium of the aldoxane formation in aqueous acetaldehyde solutions is provided. Furthermore, preliminary information on the kinetics of that reaction is presented.
登录
查看更多内容
影响因子:
15
作者:
R. H. Saunders;M. J. Murray
通讯作者:
M. J. Murray
影响因子:
3.9
作者:
Jan;M. Renner;H. Hasse
通讯作者:
H. Hasse
DOI:
10.1098/rspa.1952.0063
发表时间:
1952
期刊:
Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences
影响因子:
--
作者:
R. Bell;J. Clunie
通讯作者:
J. Clunie
影响因子:
--
作者:
R. Bell;J. Clunie
通讯作者:
J. Clunie
影响因子:
2.3
作者:
E. Späth;R. Lorenz;E. Freund
通讯作者:
E. Freund