Iminium salts in cleaning compositions.
A positive ion and clean technology, applied in the direction of organic/inorganic compound composition, organic compound/hydride/coordination complex catalyst, chemical/physical process, etc., can solve problems, enzyme inactivation, limit water solubility sexual issues
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Embodiment 1
[0184] Embodiment 1: Preparation (2-ethylhexyloxy)oxirane-2-yl methane
[0185] 2-Ethylhexanol (20 g, 15 mmol) and tin chloride (0.20 g, 1 mmol) were added to a flame-dried 1 L round bottom flask fitted with an addition funnel containing epichlorohydrin (15.62 g, 17 mmol). The reaction was carried out under an argon atmosphere and heated to 90°C with an oil bath. Epichlorohydrin was added dropwise to the stirred solution over 1 hour, followed by stirring at 90 °C for 18 hours. A vacuum distillation head was attached to the reaction flask, and 1-chloro-3-(2-ethylhexyloxy)propan-2-ol was distilled at a temperature of about 80° C. to about 85° C. and 0.2 mmHg. Under argon atmosphere, 1-chloro-3-(2-ethylhexyloxy)propan-2-ol (5.0 g, 22 mmol) was dissolved in tetrahydrofuran (50 mL) with stirring, and the temperature was maintained at about 20 °C to about 25 °C. Potassium tert-butoxide (2.52 g, 22 mmol) was added to the stirred solution, and the suspension was stirred at a tem...
Embodiment 2
[0186] Example 2: Preparation of 1-bromo-3-(2-ethylhexyloxy)propan-2-ol
[0187]2-Ethylhexanol (20 g, 15 mmol) and tin chloride (0.20 g, 1 mmol) were added to a flame-dried 1 L round bottom flask fitted with an addition funnel containing epichlorohydrin (15.62 g, 17 mmol). The reaction was carried out under an argon atmosphere and heated to 90°C with an oil bath. Epichlorohydrin was added dropwise to the stirred solution over 1 hour, followed by stirring at 90 °C for 18 hours. Then install a vacuum distillation head on the reaction flask, and distill 1-chloro-3-(2-ethylhexyloxy)propan-2-ol under high vacuum. Under argon atmosphere, 1-chloro-3-(2-ethylhexyloxy)propan-2-ol (5.0 g, 22 mmol) was dissolved in tetrahydrofuran (50 mL) and stirred while maintaining the temperature at about 20 °C to about 25 °C. Potassium tert-butoxide (2.52 g, 22 mmol) was added to the suspension maintaining the temperature at about 20°C to about 25°C, and the suspension was stirred for 18 hours...
Embodiment 3
[0188] Example 3: Preparation of 4-[(2-ethylhexyloxymethyl]-1,3,2- via synthetic routes 3 to 4 Dioxatetrahydrothiophene-2,2-dione
[0189] Sulfur trioxide-dimethylformamide complex (9.8 gm, 0.06399 mol) and toluene (100 ml) were added to a flame-dried three-neck round bottom flask equipped with an argon inlet, condenser, and magnetic stirring son. The reaction was heated to reflux and once at reflux (2-ethylhexyloxy)oxiran-2-ylmethane (10.0 gm, 0.054 mol) was added and the reaction was refluxed for 45 minutes. The reaction was cooled to room temperature, diluted with diethyl ether (50 mL), and the resulting organic solution was extracted with saturated sodium bicarbonate solution. The organic phase was separated, dried over sodium sulfate, filtered and the organic filtrate was evaporated to dryness. The resulting 4-[(2-ethylhexyloxymethyl]-1,3,2-dioxatetrahydrothiophene-2,2-dione was used without further purification.
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