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ChemicalBook CAS DataBase List 2-Methyinaphtho[1,2-d]thiazole
2682-45-3

2-Methyinaphtho[1,2-d]thiazole synthesis

7synthesis methods
1-Amino-2-naphthalenethiol

63512-54-9

Acetic anhydride

108-24-7

2-Methyinaphtho[1,2-d]thiazole

2682-45-3

1. 1-Aminonaphthalene-2-thiol and 20 mg of sodium dodecyl sulfate were added to 20 mL of water and stirred until a homogeneous mixture was formed. 2. 7.5 mmol of ethanoic anhydride was slowly added to the mixture and stirring was continued for 5 minutes. 3. A precipitate was produced from the reaction mixture over a period of 5-10 minutes. 4. The precipitate was collected by filtration, washed twice with 1 mL of water, and subsequently dried under vacuum. 5. The un-precipitated reaction mixture was extracted twice with 25 mL of ethyl acetate. 6. Ethyl acetate was used to extract the unprecipitated reaction mixture twice.6. The organic layers were combined and dried over anhydrous sodium sulfate.7. The solvent was removed under reduced pressure using a rotary evaporator to give 2-methyl-β-naphthothiazole in 70% yield.

-

Yield: 70%

Reaction Conditions:

with sodium dodecyl-sulfate in water for 0.166667 - 0.25 h;

Steps:

1
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.7.5mmol 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%.

References:

INDUSTRY-UNIVERSITY COOPERATION FOUNDATION, HANYANG UNIVERSITY (IUCF-HYU);SAMSUNG ELECTRONICS CO., LTD. WO2007/78184, 2007, A1 Location in patent:Page/Page column 14-15

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