- Synthesis and low temperature spectroscopic observation of 1,3,5-trioxane-2,4,6-trione: The cyclic trimer of carbon dioxide
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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 its conversion to CO2 is monitored by 13C NMR and FTIR. The CO2 trimer has a half-life of approximately 40 min at -40 °C.
- Rodig, Michael J.,Snow, Arthur W.,Scholl, Paul,Rea, Simon
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- Preparation of Chloroacetaldehyde Cyclic Trimer and Its Depolymerization
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Chlorination of paraldehyde gave chloroacetaldehydes which were treated with concd sulfuric acid to afford cyclic trimer (3) of chloroacetaldehyde (CA).Depolymerization of 3 yielded pure CA satisfactory.
- Wakasugi, Takashi,Tonouchi, Naka,Miyakawa, Tadashi,Ishizuka, Makoto,Yamauchi, Takashi,et al.
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p. 171 - 172
(2007/10/02)
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