反应详情

5 mmol of 1-aminonaphthalene-2-thiol was added to 20 ml of water, and 20 mg of sodium dodecylsulfate was added while agitating to obtain a uniform mixture. 7.5 mmol of acetic anhydride was added for 5 minutes. A precipitation product was obtained in 5-10 minutes. The precipitation product was filtrated and rinsed with 1 ml of water twice followed by drying under vacuum. A non-precipitated reaction mixture was extracted with 25 ml of ethyl acetate twice. The separated organic layer was dried with anhydrous sodium sulfate, and a solvent was removed using a rotatary evaporator under a reduced pressure to obtain 2-methyl naphtothiazole at a yield of 70%.

1. additionwas added
2. customto obtain a uniform mixture
3. customA precipitation product was obtained in 5-10 minutes
4. filtrationThe precipitation product was filtrated
5. washrinsed with 1 ml of water
6. customby drying under vacuum
7. extractionA non-precipitated reaction mixture was extracted with 25 ml of ethyl acetate twice
8. dry with materialThe separated organic layer was dried with anhydrous sodium sulfate
9. customa solvent was removed
10. customa rotatary evaporator under a reduced pressure