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!

ChemicalBook CAS DataBase List Protocatechuic acid
99-50-3

Protocatechuic acid synthesis

12synthesis methods
-

Yield:99-50-3 100%

Reaction Conditions:

with aluminium(III) iodide;diisopropyl-carbodiimide in acetonitrile at 80; for 18 h;

Steps:

Hydroxychavicol (4-Allylbenzene-1,2-diol, 2); General Procedure

General procedure: To a suspension of AlI3 (5.5 mmol, 1.1 equiv) in hot CH3CN (40 mL) were added sequentially DIC (0.379 g, 3 mmol, 0.6 equiv) and eugenol (1, 0.821 g, 5.0 mmol). The mixture was stirred for 18 h at 80 °C, and then it was cooled to r.t., acidified with HCl (2 mol/L, 10 mL), and extracted with EtOAc (3 × 50 mL). The organic phases were combined, washed with sat. aq Na2S2O3 (10 mL) and brine (10 mL), and was dried (MgSO4). The solvent was removed on a rotary evaporator and the residue was purified by flash column chromatography (PE/EtOAc, 4:1) to afford 2 (0.750 g, 99%) as a white solid

References:

Sang, Dayong;Wang, Jiahui;Zheng, Yun;He, Jianyuan;Yuan, Caili;An, Qing;Tian, Juan [Synthesis,2017,vol. 49,# 12,p. 2721 - 2726]

Protocatechuic acid Related Search:

彩票| 合作市| 来凤县| 鄄城县| 静海县| 申扎县| 杨浦区| 冀州市| 洛扎县| 开平市| 钦州市| 兴仁县| 德阳市| 太白县| 普定县| 舟山市| 桑植县| 上蔡县| 会昌县| 习水县| 河西区| 依安县| 确山县| 伊吾县| 平邑县| 乌兰浩特市| 兴业县| 五河县| 武陟县| 家居| 隆昌县| 长泰县| 阜平县| 武陟县| 崇文区| 揭西县| 察雅县| 洞头县| 温泉县| 江油市| 辉南县|