摘要:
The invention provides metal carbamates of the general formula (I) where R1 and R2 are the same or different and are each an alkyl group having 1-18 carbon atoms and M is an alkali metal atom.
摘要:
The invention provides metal carbamates of the general formula (I) where R1 and R2 are the same or different and are each an alkyl group having 1-18 carbon atoms and M is an alkali metal atom.
摘要:
Method of producing compounds of the general formula XPR2(OR1) Ia where X is chlorine, bromine or iodine and R1 is an organic radical, by reacting compounds of the general formula X2PR2 II, in which X has the meaning given above and R2 is an organic radical, with compounds of the general formula R1OH III, in which R1 has the meaning given above, to give a mixture IV, in that a) the postreaction is carried out at a temperature of from 50 to 240° C. and a pressure of from 0.001 to 0.9 bar, b) from the mixture IV the compounds Ia are separated off from the compounds PR2(OR1)2 Ib and, if appropriate, the compounds II and c) compounds Ib and, if appropriate, unreacted compounds II are returned to the synthesis stage.
摘要:
The object of the invention is to provide a process for preparing urethanes by reacting aromatic amines with a dialkyl carbonate, wherein the alkyl radical of the organic dialkyl carbonate comprises from 2 to 18 carbon atoms, and the reaction is carried out in the presence of a base.
摘要:
The object of the invention is to provide a process for preparing urethanes by reacting aromatic amines with a dialkyl carbonate, wherein the alkyl radical of the organic dialkyl carbonate comprises from 2 to 18 carbon atoms, and the reaction is carried out in the presence of a base.
摘要:
Method of producing compounds of the general formula XPR2(OR1) I a where X is chlorine, bromine or iodine and R1 is an organic radical, by reacting compounds of the general formula X2PR2 II, in which X has the meaning given above and R2 is an organic radical, with compounds of the general formula R1OH III, in which R1 has the meaning given above, to give a mixture IV, in that a) the postreaction is carried out at a temperature of from 50 to 240° C. and a pressure of from 0.001 to 0.9 bar, b) from the mixture IV the compounds I a are separated off from the compounds PR2(OR1)2 I b and, if appropriate, the compounds II and c) compounds I b and, if appropriate, unreacted compounds II are returned to the synthesis stage.
摘要:
A process for preparing urethanes by reacting aromatic diamines with a dialkyl carbonate, wherein the alkyl radical of the organic dialkyl carbonate comprises 2-18 carbon atoms and one or more heteroatoms and the reaction is performed in the presence of a catalyst.
摘要:
A process for isomerizing cis-2-pentenenitrile to 3-pentenenitriles, by isomerizing cis-2-pentenenitrile with amidines, tertiary amines or mixtures thereof as a catalyst at temperatures of 80 to 200° C. and a pressure of 0.01 to 50 bar.