Heterogeneous CeO 2 catalyst for the one-pot synthesis of organic carbamates from amines, CO 2 and alcohols

Masayoshi Honda; Satoru Sonehara; Hiroshi Yasuda; Yoshinao Nakagawa; Keiichi Tomishige

doi:10.1039/c1gc15646b

Heterogeneous CeO ₂ catalyst for the one-pot synthesis of organic carbamates from amines, CO ₂ and alcohols

Masayoshi Honda, Satoru Sonehara, Hiroshi Yasuda, Yoshinao Nakagawa, Keiichi Tomishige

ENG - Applied Chemistry

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

88 Citations (Scopus)

Abstract

Heterogeneous CeO ₂ catalyst can catalyze the one-pot synthesis of methyl benzylcarbamate from benzylamine, CO ₂ and methanol. The yield of methyl benzylcarbamate reached 92% at >99% benzylamine conversion and 92% benzylamine-based selectivity even in the absence of the dehydrating agents. The catalyst is reusable after the calcination at 873 K for 3 h. Various carbamates can be synthesized with good yield and high selectivity by the reaction of amines + CO ₂ + alcohols over CeO ₂. The main formation route of methyl benzylcarbamate is suggested to be the reaction of dimethyl carbonate or the precursor of dimethyl carbonate formation with benzylamine.

Original language	English
Pages (from-to)	3406-3413
Number of pages	8
Journal	Green Chemistry
Volume	13
Issue number	12
DOIs	https://doi.org/10.1039/c1gc15646b
Publication status	Published - 2011 Dec 1

ASJC Scopus subject areas

Environmental Chemistry
Pollution

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abstract = "Heterogeneous CeO 2 catalyst can catalyze the one-pot synthesis of methyl benzylcarbamate from benzylamine, CO 2 and methanol. The yield of methyl benzylcarbamate reached 92% at >99% benzylamine conversion and 92% benzylamine-based selectivity even in the absence of the dehydrating agents. The catalyst is reusable after the calcination at 873 K for 3 h. Various carbamates can be synthesized with good yield and high selectivity by the reaction of amines + CO 2 + alcohols over CeO 2. The main formation route of methyl benzylcarbamate is suggested to be the reaction of dimethyl carbonate or the precursor of dimethyl carbonate formation with benzylamine.",

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T1 - Heterogeneous CeO 2 catalyst for the one-pot synthesis of organic carbamates from amines, CO 2 and alcohols

AU - Honda, Masayoshi

AU - Sonehara, Satoru

AU - Yasuda, Hiroshi

AU - Nakagawa, Yoshinao

AU - Tomishige, Keiichi

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AB - Heterogeneous CeO 2 catalyst can catalyze the one-pot synthesis of methyl benzylcarbamate from benzylamine, CO 2 and methanol. The yield of methyl benzylcarbamate reached 92% at >99% benzylamine conversion and 92% benzylamine-based selectivity even in the absence of the dehydrating agents. The catalyst is reusable after the calcination at 873 K for 3 h. Various carbamates can be synthesized with good yield and high selectivity by the reaction of amines + CO 2 + alcohols over CeO 2. The main formation route of methyl benzylcarbamate is suggested to be the reaction of dimethyl carbonate or the precursor of dimethyl carbonate formation with benzylamine.

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