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 Bromocyclopentane
137-43-9

Bromocyclopentane synthesis

12synthesis methods
Bromocyclopentane is synthesized by bromination of cyclopentanol: cyclopentanol is mixed with hydrobromic acid and heated to about 170°C refluxed for 6-8h. Then distilled with water steam, the oil layer is washed with 5% sodium carbonate, then dried, filtered, fractionated and collected 136-139°C fraction is the finished product. Another method is by the reaction of cyclopentanol and phosphorus tribromide: the cyclopentanol is cooled to 0 ℃, add the newly evaporated phosphorus tribromide drop by drop, add it all at 0-5 ℃, stir for 2h, and leave it at room temperature overnight. Add water and stratify, take the oil layer water distillation. Distillate stratification, the oil layer was washed with 10% sodium bicarbonate solution, dried with anhydrous calcium chloride, filtration, filtrate distillation, collect 134-141 ℃ fraction that is bromocyclopentane.
-

Yield:137-43-9 100%

Reaction Conditions:

with bromine;aluminium trichloride;Acetyl bromide in pentane at 0; for 1.83333 h;

References:

Akhrem, I. S.;Orlinkov, A. V.;Vitt, S. V.;Afanas'eva, L. V.;Vol'pin, M. E. [Bulletin of the Academy of Sciences of the USSR Division of Chemical Science,1989,vol. 38,# 91,p. 1864 - 1868][Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya,1989,# 9,p. 2028 - 2033]

Bromocyclopentane Related Search:

昭苏县| 扶沟县| 天门市| 汕头市| 琼海市| 万年县| 玉林市| 刚察县| 永寿县| 平顺县| 紫云| 宜君县| 常熟市| 郁南县| 时尚| 桂林市| 西充县| 威远县| 宁强县| 堆龙德庆县| 桦南县| 丁青县| 普兰县| 灵台县| 镇安县| 望城县| 济南市| 安新县| 旬邑县| 阆中市| 永康市| 阿克陶县| 海门市| 行唐县| 广南县| 克山县| 长白| 莱阳市| 西藏| 江西省| 余庆县|