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:

富民县| 铅山县| 澄城县| 塔河县| 永川市| 修水县| 吉隆县| 铜梁县| 刚察县| 大埔县| 左贡县| 威海市| 增城市| 灵山县| 固原市| 贡觉县| 新化县| 肃宁县| 融水| 桂林市| 壶关县| 龙江县| 大连市| 阳新县| 天峻县| 樟树市| 灵丘县| 榆中县| 资源县| 汽车| 夏津县| 赣榆县| 诸暨市| 甘孜县| 韶山市| 榆社县| 罗山县| 克山县| 长顺县| 贵德县| 安泽县|