Co(acac)3/BMMImCl as a base-free catalyst system for clean syntheses of N,N′-disubstituted ureas from amines and CO2

Jian Li; Xiaoguang Guo; Liguo Wang; Xiangyuan Ma; Qinghua Zhang; Feng Shi; Youquan Deng

doi:10.1007/s11426-010-4026-8

Co(acac)₃/BMMImCl as a base-free catalyst system for clean syntheses of N,N′-disubstituted ureas from amines and CO₂

Jian Li, Xiaoguang Guo, Liguo Wang, Xiangyuan Ma, Qinghua Zhang, Feng Shi, Youquan Deng

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

A base-free catalyst system Co(acac)₃/BMMImCl was developed for the carbonylation of amines with CO₂. 45%\2-81% isolated yields for N,N-dialkylureas and 6%\2-23% isolated yields for N,N-diarylureas were obtained. The catalyst system was recovered and reused without significant loss in activity. In this catalyst system, the base catalyst and chemical dehydrant were efficiently avoided. Different reaction conditions were also discussed and a postulated mechanism was proposed.

Original language	English
Pages (from-to)	1534-1540
Number of pages	7
Journal	Science China Chemistry
Volume	53
Issue number	7
DOIs	https://doi.org/10.1007/s11426-010-4026-8
State	Published - Jul 2010
Externally published	Yes

Keywords

amines
base-free
CO
ionic liquids
N-N′-disubstituted ureas

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10.1007/s11426-010-4026-8

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title = "Co(acac)3/BMMImCl as a base-free catalyst system for clean syntheses of N,N′-disubstituted ureas from amines and CO2",

abstract = "A base-free catalyst system Co(acac)3/BMMImCl was developed for the carbonylation of amines with CO2. 45%\2-81% isolated yields for N,N-dialkylureas and 6%\2-23% isolated yields for N,N-diarylureas were obtained. The catalyst system was recovered and reused without significant loss in activity. In this catalyst system, the base catalyst and chemical dehydrant were efficiently avoided. Different reaction conditions were also discussed and a postulated mechanism was proposed.",

keywords = "amines, base-free, CO, ionic liquids, N-N′-disubstituted ureas",

author = "Jian Li and Xiaoguang Guo and Liguo Wang and Xiangyuan Ma and Qinghua Zhang and Feng Shi and Youquan Deng",

year = "2010",

month = jul,

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T1 - Co(acac)3/BMMImCl as a base-free catalyst system for clean syntheses of N,N′-disubstituted ureas from amines and CO2

AU - Li, Jian

AU - Guo, Xiaoguang

AU - Wang, Liguo

AU - Ma, Xiangyuan

AU - Zhang, Qinghua

AU - Shi, Feng

AU - Deng, Youquan

PY - 2010/7

Y1 - 2010/7

N2 - A base-free catalyst system Co(acac)3/BMMImCl was developed for the carbonylation of amines with CO2. 45%\2-81% isolated yields for N,N-dialkylureas and 6%\2-23% isolated yields for N,N-diarylureas were obtained. The catalyst system was recovered and reused without significant loss in activity. In this catalyst system, the base catalyst and chemical dehydrant were efficiently avoided. Different reaction conditions were also discussed and a postulated mechanism was proposed.

AB - A base-free catalyst system Co(acac)3/BMMImCl was developed for the carbonylation of amines with CO2. 45%\2-81% isolated yields for N,N-dialkylureas and 6%\2-23% isolated yields for N,N-diarylureas were obtained. The catalyst system was recovered and reused without significant loss in activity. In this catalyst system, the base catalyst and chemical dehydrant were efficiently avoided. Different reaction conditions were also discussed and a postulated mechanism was proposed.

KW - amines

KW - base-free

KW - CO

KW - ionic liquids

KW - N-N′-disubstituted ureas

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DO - 10.1007/s11426-010-4026-8

M3 - 文章

AN - SCOPUS:77955544650

SN - 1674-7291

VL - 53

SP - 1534

EP - 1540

JO - Science China Chemistry

JF - Science China Chemistry

IS - 7

ER -

Co(acac)₃/BMMImCl as a base-free catalyst system for clean syntheses of N,N′-disubstituted ureas from amines and CO₂

Abstract

Keywords

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