一二三四区视频,亚洲少妇熟女色,日本久热无码视频网,欧美国产日韩大尺度,亚洲a视频,久久少妇一区二区,日韩999无码视频,刺激久久久久久久,啊啊啊啊不要啊在线

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
010-86108875
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!

75238-29-8

METHYL 3,5-DIHYDROXY-4-METHYLBENZOATE synthesis

5synthesis methods
-

Yield:75238-29-8 96.8%

Reaction Conditions:

with sulfuric acid;potassium carbonate in methanol at 60;

Steps:

A11.1 Step 1: Methyl 3,5-dihydroxy-4-methylbenzoate

A mixture solution of 3,5-dihydroxy-4-methylbenzoic acid (4.7 g, 27.9 mmol) and H2504 (1.0 mL) in methanol (50 mL) was stirred at 60 °C for overnight. Then the mixture solution was concentrated and the residue was dissolved in EA (100 mL), washed with saturated NaHCO3 solution (100 mL x 3), dried over Na2504, filtered and concentrated to give the product (4.93 g, 96.8%). MS (ESI, m/e) [M+1] 183.1.

References:

WO2019/34009,2019,A1 Location in patent:Paragraph 0134-0136

METHYL 3,5-DIHYDROXY-4-METHYLBENZOATE Related Search:

江口县| 伽师县| 黑山县| 武平县| 嵊泗县| 黎平县| 湖南省| 龙海市| 金寨县| 义乌市| 通化市| 仙居县| 五指山市| 永吉县| 榆林市| 四子王旗| 西城区| 阳东县| 康乐县| 织金县| 高尔夫| 安远县| 沙坪坝区| 华安县| 湖南省| 道孚县| 博爱县| 房山区| 尚义县| 太原市| 镇巴县| 邹平县| 呈贡县| 宾川县| 长宁县| 绥滨县| 五大连池市| 晋城| 平安县| 新和县| 东平县|