EP 0000563 B1 19820512 - PROCESS FOR PREPARING AROMATIC URETHANES
Title (en)
PROCESS FOR PREPARING AROMATIC URETHANES
Publication
Application
Priority
- JP 8844177 A 19770725
- JP 8980577 A 19770728
Abstract (en)
[origin: US4178455A] In a process for preparing an aromatic urethane which comprises reacting an aromatic nitro compound, an organic compound containing at least one hydroxyl group, and carbon monoxide at elevated temperature and pressure in the presence of a catalytic system composed of a catalyst consisting of a platinum metal, a platinum metal compound, and/or a platinum metal compound-containing compound and a promoter consisting of a Lewis acid and/or a Lewis acid-containing compound, an organic primary amino compound, a urea compound, a biuret compound, an allophanate compound, or a mixture thereof is added to the reaction system whereby the reaction rate is increased and the yield of the desired product is enhanced. For example, 2,4-diethylcarbamatetoluene can be prepared in quantitatively high yield by reacting 2,4-dinitrotoluene, ethanol, carbon monoxide, and a small amount of aminonitrotoluene at elevated temperature and pressure in the presence of palladium chloride and ferrous chloride-pyridine complex.
IPC 1-7
IPC 8 full level
C07C 271/06 (2006.01)
CPC (source: EP US)
C07C 271/06 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
EP 0000563 A1 19790207; EP 0000563 B1 19820512; DE 2861807 D1 19820701; IT 1097336 B 19850831; IT 7826046 A0 19780724; US 4178455 A 19791211
DOCDB simple family (application)
EP 78100468 A 19780721; DE 2861807 T 19780721; IT 2604678 A 19780724; US 92554378 A 19780717