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 Diallyldisulfide
2179-57-9

Diallyldisulfide synthesis

15synthesis methods
By oxidation of allyl mercaptan with iodine in the presence of pyridine and ethanol; from sodium allyl thiosulfate with potassium hydroxide.
-

Yield:2179-57-9 95%

Reaction Conditions:

with 1,2-bis(5-methylisoxazol-3-yl)hydrazine;sodium carbonate;thiourea in water;acetonitrile at 80; for 2 h;

Steps:

Typical procedure for direct conversion of benzyl chloride to benzyl disulfides using thioureaand 4,4-azopyridine in CH3CN
General procedure: To a solution of thiourea (2.1 mmol, 0.160 g) and benzyl chloride (2 mmol, 0.23 mL) in wet CH3CN (3 mL CH3CN + 0.2 mL H2O), 4,4-azopyridine (1.1mmol, 0.202 g) and Na2CO3 (3 mmol, 0.318 g) were added. The mixture was stirred magneticallyat 80°C. The progress of the reaction was monitored by TLC or GC until the benzyl chloridewas consumed. After completion of the reaction, the mixture was filtered through a sintered glassfunnel to remove the produced pyridine hydrazine. The solvent was evaporated under reducedpressure and the so-obtained residue was purified by flash chromatography on silica gel withpetroleum ether as eluent to provide benzyl disulfide. Diallyl disulfide (4o) colorless oil; 1H NMR (250 MHz, CDCl3) δ 3.36 (d, J = 7.5 Hz, 2H),5.26 (m, 2H), 5.73 (m, 1H); 13C NMR (62.5 MHz, CDCl3): δ 133.1, 118.4, 42.7. Anal. Calcd.C6H10S2: C, 49.27%; H, 6.89%; S, 43.84%. Found: C, 49.18%; H, 7.05%; S, 43.77%.

References:

Khalili, Dariush;Iranpoor, Nasser;Firouzabadi, Habib [Journal of Sulfur Chemistry,2015,vol. 36,# 5,p. 544 - 555]

FullText

Diallyldisulfide Related Search:

佛冈县| 武安市| 内江市| 满洲里市| 高清| 陆丰市| 新泰市| 曲阳县| 湖州市| 彰化市| 乌苏市| 浠水县| 梅河口市| 阳泉市| 壤塘县| 武夷山市| 偏关县| 西华县| 内江市| 宜君县| 新巴尔虎左旗| 师宗县| 任丘市| 本溪| 陈巴尔虎旗| 大港区| 安泽县| 皮山县| 莲花县| 鄂托克前旗| 南开区| 云阳县| 分宜县| 贡山| 葵青区| 灵台县| 兴化市| 女性| 阳西县| 汽车| 莒南县|