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 Naphthalene
91-20-3

Naphthalene synthesis

15synthesis methods
Naphthalene is produced from coal tar or petroleum. It is made from petroleum by dealkylationof methylnaphthalenes in the presence of hydrogen at high temperature and pressure.Petroleum was a major source of naphthalene until the 1980s, but now most naphthaleneis produced from coal tar. The pyrolysis of bituminous coal produces coke and coke ovengases. Naphthalene is condensed by cooling the coke gas and then separated from the gas.
-

Yield:91-20-3 100%

Reaction Conditions:

with sodium tetrahydridoborate;[1,2-bis(diphenylphosphino)ethane]dichloronickel(II) in N,N-dimethyl-formamide at 20; for 18 h;Solvent;

Steps:

Catalytic hydrodehalogenation experiments

General procedure: All reactions were carriedout in air at room temperature. A 50 mL round-bottom flask equippedwith a magnetic stir bar was charged with 280.8 mg (0.90 mmol) of 4,4′ -dibromobiphenyl (or 0.90 mmol of another aryl halide), 0.09 mmol ofcatalyst (10 mole%), 68.1 mg (0.18 mmol, 2.0 eq) of NaBH4 and 6 mL ofDMF (or other solvents) in room temperature. The reaction mixture wasleft to stir overnight for 18 h. Thereafter, 6 mL of deionised water wasadded to stop the reaction by deactivating the excess NaBH4 in themixture.

References:

Fan, Wai Yip;Guek, Sebastian Jun Kai;Ji, Li;Koh, Hwee Ling;Loke, James Wen Liang [Molecular catalysis,2022,vol. 524,art. no. 112310]

Naphthalene Related Search:

镶黄旗| 日土县| 渭南市| 厦门市| 蓬安县| 会同县| 武平县| 屯门区| 碌曲县| 静宁县| 涞水县| 奇台县| 江北区| 玛沁县| 南充市| 大连市| 奉节县| 顺平县| 遂平县| 新营市| 广东省| 宜章县| 阳泉市| 天台县| 镇康县| 垣曲县| 杨浦区| 温州市| 阳朔县| 邯郸县| 偏关县| 金寨县| 山东省| 嘉善县| 北海市| 福海县| 渭源县| 武宁县| 同江市| 邢台市| 兴仁县|