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Indexed by:期刊论文

Date of Publication:2009-07-01

Journal:TENSIDE SURFACTANTS DETERGENTS

Included Journals:SCIE

Volume:46

Issue:4

Page Number:228-231

ISSN No.:0932-3414

Key Words:Synthesis; cationic surfactant; 3-(dimethylamino)propane-1,2-di-alkylcarbamate

Abstract:Two cationic surfactant intermediates were synthesized by improved method. The alkyl isocyanates, dodecyl isocyanate (1a) and tetradecyl isocyanate (1b), were synthesized by corresponding alkyl amines and bis(trichloromethyl) carbonate (BTC) in anhydrous toluene. The yield of 1a-b reached 86%, the product was colorless liquid and the purity was measured more than 98% by GC. The target products, 3-(dimethylamino)propane-1,2-di-dodecylcarbamate (2a) and 3-(dimethylamino) propane-1,2-di-tetradecylcarbamate (2b) were synthesized by 1-dimethylamino-2,3-propanediol and alkyl isocyanates with triethylamine as catalyst, the yield of 2a-b was 65 %.