Study on organotin-catalyzed decomposition of methyl N-phenyl carbamate
Dai, YS; Wang, Y; Yao, J; Wang, QY; Liu, LM; Cui, LL; Zhao, YF; Wang, GY
| HERO ID | 5244936 |
|---|---|
| In Press | No |
| Year | 2007 |
| Title | Study on organotin-catalyzed decomposition of methyl N-phenyl carbamate |
| Authors | Dai, YS; Wang, Y; Yao, J; Wang, QY; Liu, LM; Cui, LL; Zhao, YF; Wang, GY |
| Journal | Huaxue Xuebao / Acta Chemica Sinica |
| Volume | 65 |
| Issue | 11 |
| Page Numbers | 1064-1070 |
| Abstract | The synthesis of phenyl isocyanate (PI). was studied by thermal decomposition of methyl N-penyl carbamate (MPC) over tin catalysts. It has been found that di-n-butyltin oxide had higher activity. The unknown byproduct was determined as diphenylcarbodiimide (DPCD) by HPLC-MS. The results show that the formation of N,N'-diphenylurea (DPU) and DPCD are the main competitive reactions to the synthesis of PI. At normal pressure, the conversion of MPC is 85.17% and the yield of PI is 67.65% over Bu2SnO under the optimal reaction condition, which is as follows: solvent, o-dichlorobenzene (ODCB); m(ODCB)/m(MPC) = 15; n(Bu2SnO)/n(MPC) = 0.075; reaction time, 1 h. |
| Wosid | WOS:000247499000011 |
| Url | /www.scichina.com |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | Chinese |
| Keyword | Chemistry; methyl N-phenyl carbamate, phenyl isocyanate, catalytic decomposition,; di-n-butyltin oxide; dimethyl carbonate, thermal-degradation, polyurethane, isocyanates,; mechanism, aniline |
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