Method for preparing spiro quaternary ammonium salt
AssigneeSamhwa Paints Industries Co., Ltd.
InventorsMyeng Chan Hong, Young Seop Choi, Seung Hun Lee, Da Eun Kwon, So Hyun Jang, June Hyeop An, Chong Yun Kwag
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Abstract
The present invention relates to a method for preparing a spiro quaternary ammonium salt comprising reacting a cyclic secondary amine with a dihaloalkane in the presence of a basic resin. According to the preparation method of the present invention, a metal salt and halide ion are removed by filtration without any additional purification process, the spiro ammonium derivative compound can be obtained with high yield, and the resin can be reused through a simple treatment process.
Claims10
A method for preparing a Spiro quaternary ammonium compound comprising:
- a first step of reacting a cyclic secondary amine derivative with dihaloalkane in the presence of a basic ion exchange resin represented by chemical formula 1 below, thereby obtaining a Spiro derivative compound and a resin;
- a second step of reacting the resin obtained in the first step with an acid, thereby obtaining a resin represented by chemical formula 2 below;
- and
- a third step of reacting the spiro derivative compound obtained in the first step with the resin obtained in the second step thereby obtaining a spiro quaternary ammonium compound and a resin resulting from an ion exchange reaction,
- wherein R1, R2 and R3 are each independently hydrogen or C1-C6 alkyl group;
- anion A represents hydroxide (OH−) or bicarbonate (HCO3−), and is a polymer constituting resin
- wherein R1, R2, and R3 are each independently hydrogen or C1-C6 alkyl group;
- anion B represents tetrafluoroborate(BF4−), hexafluorophosphate(PF6−), or bis(trifluoromethylsulfonyl) imide((CF3SO2)2N−), and is a polymer constituting resin.
Dependencies are inferred from the claim text.