28147-81-1Relevant articles and documents
Method for preparing methyl carbamate by catalyzing methanol conversion
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Paragraph 0039, (2018/01/09)
The invention discloses a method for preparing methyl carbamate by catalyzing methanol conversion. The method specifically comprises: taking oxygen or air as an oxygen source, taking organic amine as a nitrogen source, taking methanol as a solvent, in the function of a catalyst, allowing methanol to undergo ammoxidation to generate methanamide, and allowing methanamide to undergo in-situ oxidation esterification to obtain methyl carbamate. The method is high in raw material utilization rate. The catalyst is cheap and available, is easy to recycle, can be reused, and is easy to separate from the product. The obtained methyl carbamate is excellent in performance and high in purity. The technical route is of great significance in releasing excess production capacity of methanol and reducing the dependence on highly toxic chemicals.
Mild and convenient synthesis of organic carbamates from amines and carbon dioxide using tetraethylammonium superoxide
Singh, Krishna Nand
, p. 2651 - 2654 (2008/02/12)
A safe and simple method of preparing organic carbamates has been achieved from amines and carbon dioxide using tetraethylammonium superoxide generated in situ. Copyright Taylor & Francis Group, LLC.
Correlation of the rates of solvolysis of the N,N-diphenylcarbamoylpyridinium ion
Kevill, Dennis N.,Bond, Michael W.,D'Souza, Malcolm J.
, p. 273 - 276 (2007/10/03)
Solvolyses of the N,N-diphenylcarbamoylpyridinium ion are subject to specific and/or general base catalysis, which can be eliminated by addition of perchloric acid or increased, especially in fluoroalcohol-containing solvents, by addition of pyridine. The uncatalyzed solvolyses in aqueous methanol and aqueous ethanol involve a weakly nucleophilically assisted (l=0.22) heterolysis and the solvolyses in the pure alcohols are anomalously slow.
