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 DESOXYANISOIN
120-44-5

DESOXYANISOIN synthesis

13synthesis methods
-

Yield:120-44-5 115 mg

Reaction Conditions:

with sodium sulphide nonahydrate in N,N-dimethyl-d6-formamide at 20; for 0.5 h;Inert atmosphere;chemoselective reaction;

Steps:

General dihydroxylation procedure:

General procedure: To a solution of -hydroxyl carbonylcompounds 1 (0.5 mmol) and PPh3 (0.5 mmol) in dry DMF (2.0 mL) under nitrogenatmosphere at room temperature, followed by the addition of NCS (0.5 mmol). Theresulting reaction mixture was stirred for 0.5 h and Na2S·9H2O (0.5 mmol) was thenadded to the mixture. After 0.5 h the reaction was completed, the reaction was quenchedwith H2O (5 mL), and the resulting mixture was extracted with ethyl acetate (3 × 20mL). The organic phases were combined, washed with saturated brine, dried overanhydrous Na2SO4, and and concentrated in vacuo. The resultant residue was purifiedby flash chromatography (petroleum ether/ethyl acetate = 50/1-10/1) on silica gel toafford the desired product 2.

References:

Xu, Xiaobo;Yan, Leyu;Zhang, Zhi-Kai;Lu, Bingqing;Guo;Chen, Mengyue;Cao, Zhong-Yan [Molecules,2022,vol. 27,# 15,art. no. 4675] Location in patent:supporting information

DESOXYANISOIN Related Search:

荣昌县| 会昌县| 营山县| 确山县| 武邑县| 梧州市| 江安县| 阜宁县| 平武县| 东港市| 车致| 兴化市| 任丘市| 时尚| 行唐县| 洛川县| 五家渠市| 南陵县| 进贤县| 高唐县| 阿拉善左旗| 阜宁县| 库尔勒市| 滁州市| 岱山县| 虎林市| 阳曲县| 平果县| 沁源县| 清远市| 浮梁县| 纳雍县| 新泰市| 轮台县| 茶陵县| 榆社县| 仙桃市| 迁安市| 漳平市| 中西区| 康定县|