A silica-supported chitosan (CS)-palladium complex CS-PdCl 2 /SiO 2 shows good conversion and higher regioselectivity in carbonylation of 6-methoxy-2-vinylnaphthalene. The high selectivity of the catalyst was achieved by the synergic effect of Pd-Ni bimetallic system and by polymer protection. Effec
✦ LIBER ✦
Polymer-supported palladium–manganese bimetallic catalyst for the oxidative carbonylation of amines to carbamate esters
✍ Scribed by Boshun Wan; Shijian Liao; Daorong Yu
- Book ID
- 108471896
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 106 KB
- Volume
- 183
- Category
- Article
- ISSN
- 0926-860X
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## Abstract A highly efficient oxidative carbonylation reaction of amines to ureas was developed making use of carbene–palladium complexes in the absence of any promoter. Both aliphatic amines and aromatic amines were transformed in good to excellent yields to the expected ureas.