An array of organic bases DMAP (4-dimethylaminopyridine), DBU (1, 8-diazabicyclo [5.4.0] undec-7-ene), TBD (1, 5, 7-triazabicyclo [4.4.0] dec-5-ene), and their base/acid conjugate organocatalyst systems were evaluated in the trimerization of various isocyanates. The performance depended greatly on the combination of the catalyst systems, and the [HTBD][OAc] (acetic acid) catalyst systems were considerably the most active in contrast to the corresponding DMAP and DBU counterparts. The [HTBD][OAc] catalyst system was capable of providing isocyanurates from the cyclotrimerization of various isocyanate substrates in excellent yields in seconds even under bulk conditions. A bifunctional catalytic mechanism over [HTBD][OAc] was proposed.

一系列有机碱DMAP（4-二甲基氨基吡啶），DBU（1，8-二氮杂双环[5.4.0] undec-7-ene），TBD（1，5，7-三氮杂双环[4.4.0] dec-5-ene ），并在各种异氰酸酯的三聚反应中评估了它们的碱/酸共轭有机催化剂体系。性能很大程度上取决于催化剂体系的组合，与相应的DMAP和DBU相比，[HTBD] [OAc]（乙酸）催化剂体系的活性最高。[HTBD] [OAc]催化剂体系即使在大量条件下，也能够在数秒内以优异的产率从各种异氰酸酯底物的环三聚反应中提供异氰脲酸酯。提出了在[HTBD] [OAc]上的双功能催化机理。