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 1,3,5-Triazine
290-87-9

1,3,5-Triazine synthesis

6synthesis methods
Symmetrical 1,3,5-triazines are prepared by trimerization of certain nitriles such as cyanogen chloride or cyanimide. Benzoguanamine (with one phenyl and 2 amino substituents) is synthesised from benzonitrile and dicyandiamide. In the Pinner triazine synthesis (named after Adolf Pinner) the reactants are an alkyl or aryl amidine and phosgene. Insertion of an N-H moiety into a hydrazide by a copper carbenoid, followed by treatment with ammonium chloride also gives the triazine core.
Amine-substituted triazines called Guanamines are prepared by the condensation of cyanoguanidine with the corresponding nitrile:
(H2N)2C=NCN + RCN → (CNH2)2(CR)N3
-

Yield:-

Reaction Conditions:

in water for 2 h;

Steps:


N-Methylidenemethylamine was prepared by mixing paraformaldehyde and an aqueous solution of methylamine (40%) with stirring at room temperature for a period of time of 2 hours. The reaction product was extracted with dichloromethane and dried. The reaction product was identified by 1H NMR to be a cyclic trimer.

References:

Loctite (R&D) Limited US7569719, 2009, B1 Location in patent:Page/Page column 10

FullText

1,3,5-Triazine Related Search:

辽中县| 个旧市| 福安市| 余姚市| 顺义区| 阆中市| 南雄市| 连南| 泰州市| 治多县| 清水河县| 英吉沙县| 广东省| 青铜峡市| 滦南县| 贵定县| 扶风县| 青川县| 永春县| 定远县| 来安县| 那坡县| 延寿县| 古浪县| 沂南县| 新源县| 同心县| 凤庆县| 冕宁县| 肇东市| 平遥县| 安陆市| 宜良县| 徐水县| 新竹市| 卓资县| 吴桥县| 安福县| 泸定县| 峨山| 汾西县|