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US 4,785,122 AGranted
Method for production of amine compound
AssigneeNippon Shokubai Kagaku Kogyo Co., Ltd.
InventorsTsunemasa Ueno, Yutaka Morimoto
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Abstract
A method for the producing 2-[[[5-(dialkylamino)alkyl-2-furanyl]methyl]thio]-ethane amine by the reaction of cysteamine or cysteamine hydrochloride containing free hydrogen chloride with 5-(dialkyl amino)alkyl furfuryl alcohol, which method can be obtained the product in a highly yield by carrying out said reaction at a temperature in the range of 30.degree. to 80.degree. C.
Claims9
A method for the production of 2-[[[5-(dimethylamino)methyl-2-furanyl]methyl]thio]-ethane amine represented by the formula II:
- ##STR6## wherein R.sup.1 and R.sup.2 independently stand for an alkyl group of 1 to 4 carbon atoms and Alk stands for an alkylene group of 1 to 4 carbon atoms, by the reaction of 5-(dialkylamino)alkylfurfuryl alcohol represented by the formula I:
- ##STR7## wherein R.sup.1, R.sup.2 and Alk have the same mean ing as defined above, with cysteamine or cysteamine hydrochloride in the presence of free excess concentrated aqueous hydrogen chloride at a temperature of 30.degree. to 80.degree. C. for from about 15 to about 180 minutes.
Dependencies are inferred from the claim text.