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 DIMETHYLZINC
544-97-8

DIMETHYLZINC synthesis

8synthesis methods

A method for the preparation of dimethyl zinc, comprising the following steps: adding zinc fluoride to a reaction kettle under the protection of nitrogen, then adding trimethylaluminum dropwise under stirring conditions, the molar ratio of trimethylalu

-

Yield:544-97-8 92%

Reaction Conditions:

at 60; for 6 h;Inert atmosphere;

Steps:

2; 4 Example 4
A method for preparing dimethyl zinc, comprising the steps of: adding zinc chloride to a reaction kettle under nitrogen protection, and then adding the moles of trimethylaluminum, trimethylaluminum and zinc chloride dropwise under stirring conditions. The ratio is 1: 1.8. The reaction speed is controlled by the dropping acceleration of trimethylaluminum. After the completion of the dropping of trimethylaluminum, the stirring reaction is continued for 4.5 hours, and then the temperature of the kettle is adjusted to 42 ° C and maintained for 2h. The distilled Zn is collected (CH3) 2; Then, diethyl zinc was added dropwise to the reaction kettle, and the molar ratio of trimethylaluminum and diethyl zinc was 1.3: 1, and the temperature of the reaction kettle was controlled to 91 ° C. The distilled Zn ( CH3) 2. After the addition of diethylzinc was completed, the temperature of the kettle was maintained at 91 ° C, and Zn (CH3) 2 was collected for 3 hours.The yield of dimethylzinc in this example is 92% (calculated as the methyl group of trimethylaluminum).

References:

Henan Chengming Optoelectric New Materials Co., Ltd.;Ning Hongfeng CN104774214, 2016, B Location in patent:Paragraph 0014-0016; 0020-0022

FullText

DIMETHYLZINC Related Search:

聂荣县| 江川县| 松阳县| 潍坊市| 平顶山市| 苗栗市| 延庆县| 南郑县| 临颍县| 六枝特区| 潮安县| 铜陵市| 锡林浩特市| 绥芬河市| 涿州市| 天柱县| 卢湾区| 江孜县| 霍邱县| 丰台区| 闸北区| 札达县| 五河县| 玉树县| 苏州市| 永善县| 太仆寺旗| 资阳市| 泊头市| 柘城县| 台湾省| 连江县| 来宾市| 政和县| 桂林市| 化隆| 南乐县| 称多县| 兴和县| 玉山县| 京山县|