Activity of homogeneous transition metal catalysts for oxidative carbonylation of aniline to N,N′diphenyl urea
✍ Scribed by Shafeek A.R. Mulla; Chandrashekhar V. Rode; Ashutosh A. Kelkar; Sunil P. Gupte
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 671 KB
- Volume
- 122
- Category
- Article
- ISSN
- 1381-1169
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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.
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A new type of homogeneous catalyst for dimethyl carbonate (DMC) synthesis by oxidative carbonylation of methanol in the liquid-phase reaction was investigated. The polymer-bound monometallic PVP-CuCl 2 catalyst (PVP, poly(N-vinyl-2-pyrrolidone)) prepared by the combination of an alcoholic solutions