Table 2.

Cycloaddition of CO₂ with different epoxides catalyzed by DVB-HTA

Entry	Epoxide	Product	Time (h)	Con (%)a	Sel (%)b
1			3	90	98
2			6	93	99
3			6	89	98
4			4	83	98
5			12	56	63

Reaction conditions: epoxide (16 mmol), CO₂ (1.2 MPa), catalyst DVB-HTA (0.05 g, 0.035 mmol), 120 °C

^aThe yield for the cyclic carbonate product

^bThe selectivity for the cyclic carbonate product, and the byproduct for entry 5 is mostly 1,2-hexanediol