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 Dimethyl sulfoxide
67-68-5

Dimethyl sulfoxide synthesis

4synthesis methods
Dimethyl sulfoxide is prepared by air oxidation of dimethyl sulfide in the presence of nitrogen oxides. It can also be obtained as a by product of wood pulp manufacture for the paper and allied industries.
-

Yield:67-68-5 100%

Reaction Conditions:

with C12H11Cl3N2O3 in chloroform; for 7 h;Reflux;

Steps:

Oxygen transfer to sulfides with oxaziridines in the absence of acid

General procedure: A solution of oxaziridine 3, 4, 1b, and 1c (1 mmol) in chloroform (20 mL) was heated at reflux in the presence of sulfide (1 mmol). The reaction was taken under magnetic stirring and heating for 7h and monitored by TLC. Then, the reaction products were identified by 1H NMR spectroscopic analysis. All the isolated sulfoxide compounds were purified by chromatography over silica gel using dichloromethane/methanol 95:5 as eluent. The sulfoxides obtained are compared and identified with commercial samples. There sults obtained are presented in Table 1 (entries 2, 5, and 6). This reaction was carried out using also acetonitrile (20 mL) and methanol (20 mL) as solvent. There sults obtained are presented in Table 1 (entries 3and 4).

References:

Aydi, Rihab;Kammoun, Majed [Synthetic Communications,2016,vol. 46,# 2,p. 134 - 144]

Dimethyl sulfoxide Related Search:

双流县| 福州市| 武邑县| 西和县| 即墨市| 唐河县| 清丰县| 临泉县| 丰台区| 洱源县| 图木舒克市| 仁化县| 桐城市| 句容市| 岗巴县| 凤城市| 隆昌县| 偏关县| 黄石市| 措勤县| 青田县| 皋兰县| 宿州市| 柘城县| 海丰县| 南投县| 门头沟区| 崇阳县| 冷水江市| 晋宁县| 固安县| 陵川县| 泰顺县| 溧阳市| 大宁县| 镇沅| 兰坪| 康马县| 宜春市| 新丰县| 寿宁县|