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The syntheses of carbamates from reactions of primary and secondary aliphatic amines with dimethyl carbonate in ionic liquids

โœ Scribed by Tianlong Sima; Shu Guo; Feng Shi; Youquan Deng

Publisher
Elsevier Science
Year
2002
Tongue
French
Weight
91 KB
Volume
43
Category
Article
ISSN
0040-4039

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โœฆ Synopsis

At 170ยฐC and using ionic liquids as solvent and catalyst, primary and secondary aliphatic amines could react with dimethyl carbonate to give alkyl carbamates with good yield. Due to its insolubility, the desired carbamate solid could be recovered by simple filtration from the two-layer mixture of dimethyl carbonate and ionic liquid after reaction and the formation of N-methylated and deammoniated products were restrained.

๐Ÿ“œ SIMILAR VOLUMES

The synthesis of alkyl carbamates from p
The synthesis of alkyl carbamates from primary aliphatic amines and dialkyl carbonates in supercritical carbon dioxide
โœ Maurizio Selva; Pietro Tundo; Alvise Perosa ๐Ÿ“‚ Article ๐Ÿ“… 2002 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 60 KB

At 130ยฐC and in the presence of compressed CO 2 , primary aliphatic amines [RNH 2 , R=C 10 H 21 , C 8 H 17 , cHex, 1-(C 10 H 7 )CH 2 ] react with organic carbonates (R%OCO 2 R%; R%=Me, Et) to give alkyl carbamates (RNHCO 2 R%, 1). Although CO 2 promotes the reaction also at a low pressure, good yiel