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Synthesis of dialkyl hexamethylene-1,6-dicarbamate from 1,6-hexamethylenediamine and alkyl carbamate over FeCl3 as catalyst

Paper ID Volume ID Publish Year Pages File Format Full-Text
51345 46839 2009 4 PDF Available
Title
Synthesis of dialkyl hexamethylene-1,6-dicarbamate from 1,6-hexamethylenediamine and alkyl carbamate over FeCl3 as catalyst
Abstract

A series of catalysts (e.g. FeCl3, Zn(OAc)2, Pb(NO3)2, etc.) were tested for the trans-esterification reaction of 1,6-hexamethylenediamine (HDA) with methyl carbamate (MC), ethyl carbamate (EC), and butyl carbamate (BC) to afford dialkyl hexamethylene-1,6-dicarbamate (AHDC). By applying the optimized condition, 100% conversion of HDA and 93% yield to diethyl hexamethylene-1,6-dicarbamate (EHDC) could be obtained using FeCl3 as catalyst. The desired products could be precipitated by adding water into the resulting mixture, and the activity of recovered catalyst could be maintained.

Keywords
Non-phosgene; Carbamate; Carbonylation; 1,6-Hexamethylenediamine; Isocyanate
First Page Preview
Synthesis of dialkyl hexamethylene-1,6-dicarbamate from 1,6-hexamethylenediamine and alkyl carbamate over FeCl3 as catalyst
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 10, Issue 8, 30 March 2009, Pages 1248–1251
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis