Synthesis and Low Temperature Spectroscopic Observation of 1,3,5-Trioxane-2,4,6-Trione: The Cyclic Trimer of Carbon Dioxide
作者:Michael J. Rodig、Arthur W. Snow、Paul Scholl、Simon Rea
DOI:10.1021/acs.joc.6b00647
日期:2016.7.1
1,3,5-Trioxane-2,4,6-trione (cyclic trimer of CO2) is the product of a four-step synthesis: chlorination of isobutyraldehyde; cyclotrimerization of 2-chloro-2-methylpropanal; dehydochlorination of 2,4,6-tris(2-chloropropan)-2-yl-1,3,5-trioxane; ozonolysis at −80 °C of 2,4,6-tri(propan-2-ylidene)-1,3,5-trioxane. This trioxane-trione is detected in solution at temperatures between −80 to −40 °C, and
1,3,5-三恶烷-2,4,6-三酮(CO 2的环状三聚体)是四步合成的产物:异丁醛氯化;2-氯-2-甲基丙醛的环三聚;2,4,6-三(2-氯丙烷)-2-基-1,3,5-三恶烷的脱氯化氢; 在-80°C下进行2,4,6-三(丙烷-2-亚烷基)-1,3,5-三恶烷的臭氧分解。在-80至-40°C的温度下在溶液中检测到这种三恶烷-三酮,并通过13 C NMR和FTIR监测其向CO 2的转化。CO 2三聚体在−40°C下的半衰期约为40分钟。