15580-20-8Relevant articles and documents
Preparation method of 1-cyclohexyl-2-(morpholinoethyl) carbodiimide methyl p-toluenesulfonate
-
Paragraph 0043; 0058; 0061-0062; 0066; 0069-0070, (2021/05/08)
The invention provides a preparation method of 1-cyclohexyl-2-(morpholinoethyl) carbodiimide methyl p-toluenesulfonate, and the method comprises the following steps: S1, adding N-(2-aminoethyl) morpholine into a first organic solvent, and dropwise adding cyclohexyl isocyanate to generate an intermediate 1; S2, carrying out intramolecular dehydration reaction on the intermediate 1 to obtain an intermediate 2; S3, enabling the intermediate 2 to react with methyl p-toluenesulfonate, so as to generate the 1-cyclohexyl-2-(morpholinoethyl) carbodiimide methyl p-toluenesulfonate. According to the preparation method of the 1-cyclohexyl-2-(morpholinoethyl) carbodiimide methyl p-toluenesulfonate disclosed by the embodiment of the invention, a product with high purity can be smoothly obtained, and the method is good in operability, higher and stable in yield and easily available in raw materials.
Preparation of Carbodiimides from Phosphoramidates
Jaszay, Zsuzsa M.,Petnehazy, Imre,Toeke, Laszlo,Szajani, Bela
, p. 397 - 399 (2007/10/02)
ω-Dialkylaminoalkylphosphoramidates are converted to ω-dialkylaminoalkyl(alkyl)carbodiimides in good yield in a two-phase system by reaction with isocyanates.
Preparation of Carbodiimides Using Phase-Transfer Catalysis
Jaszay, Zsuzsa M.,Petnehazy, Imre,Toeke, Laszlo,Szajani, Bela
, p. 520 - 523 (2007/10/02)
A new method is described for the preparation of carbodiimides by dehydration of ureas with arenesulfonyl chlorides under solid-liquid phase-transfer catalytic (PTC) conditions using solid potassium carbonate as a base and a lipophilic quaternary ammonium salt as a catalyst.The method is generally applicable for the synthesis of disubstituted carbodiimides, but is especially useful for unsymmetrically substituted carbodiimides.The basic carbodiimides prepared were identified in the form of the more stable, crystalline quaternary salts.