午夜插插,噜噜噜影院,啪啪伊人网,欧美熟夫,景甜吻戏视频,男人强操性感蕾丝美女视频在线网站,日本美女跳舞视频

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
400-158-6606
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 Des(N'-Methyl-2-nitro-1,1-ethenediaMino) N'-Methylureido Nizatidine
82586-81-0

Des(N'-Methyl-2-nitro-1,1-ethenediaMino) N'-Methylureido Nizatidine synthesis

1synthesis methods
-

Yield:-

Reaction Conditions:

in acetonitrile;

Steps:

6 Preparation of N-methyl-N'-2-(2-dimethylaminomethyl-4-thiazolylmethylthio)ethylthiourea

Following the above reaction sequence, a solution of 0.93 g of 2-(2-dimethylaminomethyl-4-thiazolylmethylthio)ethylamine in 10 ml. of anhydrous acetonitrile was prepared. A solution of 0.22 ml. of methyl isocyanate in 5 ml. of anhydrous acetonitrile was added thereto. The reaction was stirred at ambient temperature for about 2.5 hours at which time the solvent was removed by evaporation. The resulting residue slowly crystallized and was recrystallized from cylcohexane to yield about 0.97 g of N-methyl-N'-2-(2-dimethylaminomethyl-4-thiazolylmethylthio)ethylurea melting at about 56°-59° C. Analysis: calculated: C, 45.81; H, 6.99; N, 19.42; O, 5.55. found: C, 46.03; H, 6.66; N, 19.41; O, 5.71.

References:

US4382090,1983,A

Des(N'-Methyl-2-nitro-1,1-ethenediaMino) N'-Methylureido Nizatidine Related Search: