Trimethylsilylethylsulfide, trimethylsilylphenylsulfide, triethylstannylethylsulfide 그리고 triethylstannylphenysulfide를 10일간 여러온도에서 isocyanate와 각각 반응시켰다. 이들 Si-S와 Sn-S결합 유기금속화합물들은 phenylisocyanate의 이량체, 삼량체, diphenylcarbodiimide 및 1,3,5-triphenyl-4-phenyliminohexahydro-1,3,5-triazine-2,6-dione의 생성 촉매로 작용하였다. 반면 이 화합물들은 ethylisocyanate로부터는 삼량체인 triethylisocyanurate만을 생성하였다.
Reactions of trimethylsilylethylsulfide, trimethylsilylphenylsulfide, triethylstannylethylsulfide, and triethylstannylphenylsulfide with isocyanates were studied at various temperatures for 10 days. These Si-S and Sn-S bond compounds catalyzed the production of the cyclic dimer and trimer of phenylisocyanate, diphenylcarbodiimide and 1,3,5-triphenyl-4-phenyliminohexahydro-1,3,5-triazine-2,6-dione in the reaction of phenylisocyanate. In contrast, these compounds gave only the cyclic trimer, triethylisocyanurate, from ethylisocyanate.
