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 Transfluthrin
118712-89-3

Transfluthrin synthesis

1synthesis methods
-

Yield:118712-89-3 97.6%

Reaction Conditions:

with pyridine in toluene at 5 - 15; for 3 h;

Steps:

5 Example 1 Synthesis of (f?S)-3-allyl-2-methyl-4-oxocyclopent-2-enyl (1 f?,3/:?)-2,2-dimethyl - (0119) 3-(2-methylprop-1 -enyl) cyclopropanecarboxylate (D-trans-allethrin)
General procedure: In 1 liter three necked bottom flask with a stirrer, 51 .0 g (0.33 moles) of (f?S)-3- allyl-2-methyl-4-oxocyclopent-2-enyl-1 -ol with a purity of 99% (%w/w) were mixed with 180 ml of toluene and cooled to 5°C under nitrogen atmosphere. The solution was added with 34.5 g (0.43 moles) of pyridine and added slowly and under stirring with 65.0 g (0.34 moles) of (1 R,3R)-2,2-dimethyl-3-(2-methylprop- 1 -enyl) cyclopropane carboxylic acid chloride with a purity of 98.0% (% w/w), keeping the temperature at 5°C-10°C . After the addition, the reaction was heated to 15°-20°C under stirring for further 3 hours. (0121) 4.1 g (0.05 moles) of 1 ,3-diaminopropane were added and the reaction was maintained under stirring for further Vz hour. The reaction was then added with an acid aqueous solution (0.36 moles of HCI 33%(%w/w) in 135 ml of water), stirred and the organic phase separated off. The organic phase was then washed with water, separated and washed again with 65 ml of an aqueous solution containing 8% (% w/v) of sodium carbonate. The organic phase was separated and evaporated u.v at 40°C/ 0.2 kPa. (0122) 98.5 g of a crude product with a purity of 96.8% (% w/w) was obtained (yield 95%) whose NMR analysis is in accordance with the structure. (0123) The amount of chrysanthemic anhydride was less than 0.02% (%w/w) by GC analysis as previously reported. (0124) 1H-NMR (300 MHz, CDCIs): 1 .15 (s, 2.25H), 1 .1 6 (s, 0.75H), 1 .27 (s, 2.25H), 1 .29 (s, 0.75H), 1 .41 (d, 0.25H, 3J = 5.5 Hz), 1 .43 (d, 0.75H, 3J = 5.5 Hz), 1 .70 - 1 .75 (m, 6H), 2.02 (s, 2.25H), 2.04 (s, 0.75H), 2.10 (dd, 1 H, 3J = 7.7 Hz, 3J = 5.2 Hz), 2.24 (dd, 0.75H, 2J = 18.7 Hz, 3J = 2.0 Hz), 2.31 (dd, 0.25H, 2J = 18.7 Hz, 3J = 2.0 Hz), 2.86 (dd, 0.25H, 2J = 18.7 Hz, 3J = 7.3 Hz), 2.88 (dd, 0.75H, 2J = 18.7 Hz, 3J = 6.3 Hz), 2.99 (d, 2H, 3J = 6.4 Hz), 4.92 (dm, 1 H, 3J = 7.5 Hz), 5.02 (m, 2H), 5.69 (m, 1 H), 5.77 (m, 1 H). (0125) 13C-NMR (75 MHz, CDCIs): 13.75 (CH3), 13.87 (CH3), 18.34 (CH3), 20.24 (CH3), 20.37 (CH3), 21 .95 (CH3), 22.00 (CH3), 25.39 (CH3), 26.97 (CH2), 28.93 (Cq), 32.81 (CH), 33.01 (CH), 34.37 (CH), 34.42 (CH), 41 .46 (CH2), 41 .88 (CH2), 72.47 (CH), 72.77 (CH), 1 15.78 (CH2), 120.60 (CH), 120.67 (CH), 133.41 (CH), 135.70 (Cq), 141 .15 (Cq), 141 .22 (Cq), 1 65.76(Cq), 1 65.86 (Cq), 172.12 (Cq), 203.59 (Cq), 203.65 (Cq).

References:

ENDURA S.P.A.;ZAMBONIN, Giuliano;LOLLI, Simona;GUERRINI, Alberto;BORZATTA, Valerio WO2018/50213, 2018, A1 Location in patent:Page/Page column 10; 11; 14

FullText

Transfluthrin Related Search:

滦南县| 木兰县| 乌鲁木齐市| 图片| 会同县| 乌兰浩特市| 巴中市| 仙桃市| 博野县| 永福县| 乌海市| 浏阳市| 宜昌市| 池州市| 南丹县| 曲麻莱县| 韶关市| 镇坪县| 东光县| 东阿县| 姚安县| 沙湾县| 扎兰屯市| 长兴县| 五莲县| 卓尼县| 星座| 广灵县| 襄垣县| 太保市| 罗平县| 兴业县| 双鸭山市| 石楼县| 桑植县| 洪雅县| 青浦区| 丹巴县| 延庆县| 商丘市| 平顺县|