The reaction of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) with carbon dioxide
The reaction of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) with carbon dioxide
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DOI：
10.1021/jo0503759
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发表时间：
2005-06-24
影响因子：
3.6
通讯作者：
Liotta, CL
中科院分区：
文献类型：
--
作者：
Heldebrant, DJ;Jessop, PG;Liotta, CL
据报道，酰胺类化合物与二氧化碳反应形成稳定的、可分离的两性离子加合物，但以前的研究是在至少一些水的存在下进行的。然而，DBU与CO2反应的光谱检测到，当湿DBU暴露在CO2中时，DBU的碳酸氢盐迅速形成，而不是在有水或无水的情况下，DBU与CO2之间形成了可分离的两性离子加合物。
Amidines have been reported to react with CO2to form a stable and isolable zwitterionic adduct but previous studies were performed in the presence of at least some water. However, spectroscopy of the reaction between DBU and CO2detects the rapid formation of the bicarbonate salt of DBU when wet DBU is exposed to CO2and does not indicate that an isolable zwitterionic adduct between DBU and CO2forms either in the presence or the absence of water.