成人免费xx,国产又黄又湿又刺激不卡网站,成人性视频app菠萝网站,色天天天天

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
400-158-6606
Try our best to find the right business for you.
Do not miss inquiry messages Please log in to view all inquiry messages.

Welcome back!

ChemicalBook CAS DataBase List METHYL 2-METHOXY-4-METHYLBENZOATE
81245-24-1

METHYL 2-METHOXY-4-METHYLBENZOATE synthesis

11synthesis methods
-

Yield: 99%

Reaction Conditions:

with sodium hydride in N,N-dimethyl-formamide at 0; for 1 h;

Steps:

33.1 Step one, compound 2
Compound 1 (7.6 g, 50 mmol) was dissolved in N,N-dimethylformamide (100 mL), and methyl iodide (21.3 g, 150 mmol) was added.After the reaction system was cooled to 0°C, sodium hydride (60%, 6g, 150mmol) was slowly added in batches, stirred for 1 hour, and water (20mL) was added to quench the reaction.The solution obtained above was extracted with ethyl acetate (3x 200mL), the organic phase was washed successively with water (2x 200mL), saturated sodium chloride solution (200mL), dried over anhydrous sodium sulfate, and concentrated under reduced pressure to obtain compound 2 (yellow oily) Liquid, 9.0g, yield 99%).

References:

CN112939961, 2021, A Location in patent:Paragraph 0424-0428