Cyclic carbonate of glycol

Into a vessel provided with efficient stirring means there are gradually introduced, while maintaining the temperature at 40°C, 535.0 g of benzylamine and 440.0 g of cyclic carbonate of glycol. The mass obtained is maintained at a temperature 40-50°C for about 12 h. Upon cooling, there is obtained a glycol benzylcarbamate as a white crystalline, melting point at 40°C, yield 92%. 

Cyclic carbonates of glycols—e.g., ethylene carbonate or propylene carbonate—are readily prepared from carbon dioxide and the alkylene oxide (135). 

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