The present invention provides a diamine derivative or the like represented by the general formula (I):
wherein Q represents an oxygen atom or the like, RG represents a hydrogen atom or the like, RI represents
(wherein p and r may be the same or different, and each represents 0 or the like, RA represents a hydrogen atom or the like, and RB and Rc may be the same or different, and each represents a hydrogen atom or the like), RH represents a hydrogen atom or the like, and RJ represents:
(wherein q and s may be the same or different, and each represents 0 or the like, RD represents a hydrogen atom or the like, and RE and RF may be the same or different, and each represents a hydrogen atom or the like) or the like}, etc.
Utility of bis(methylthio)methylene malononitrile as a synthon in the synthesis of new poly-functionalized cyanoiminopyrimidines
作者:Amr Hassan Moustafa、Amer Anwar Amer
DOI:10.1007/s00706-017-2037-2
日期:2017.12
AbstractA new series of 4-(alkyl/arylamino)-6-amino-5-cyano-2-cyanoimino-1H-pyrimidine was obtained via one-pot three-component reaction of bis(methylthio)methylene malononitrile, primary amines, and cyanoguanidine using sodium ethoxide as basic catalyst. The same new products were prepared by classical route via reaction of (alkyl/arylamino)(methylthio)methylene malononitrile with cyanoguanidine in
作者:Medhat A Zaharan、Ahmed M.Sh El-Sharief、Mohamed S.A El-Gaby、Yousry A Ammar、Usama H El-Said
DOI:10.1016/s0014-827x(01)01042-4
日期:2001.4
Pyrazolo[1,5-a]pyrimidines were synthesized via the reaction of ketene dithioacetals and 5-aminopyrazoles. The antibacterial and antifungal activities of some selected compounds are also reported.
The revision of the structure of hydrolytic product from 4-cyano-1-ethoxypyrirnido[1,6-a]benzimidazole (1) and the properties of ethyl (2-benzimidazolyl)cyanoacetimidate (3a) are described.
描述了对4-氰基-1-乙氧基吡啶并[1,6- a ]苯并咪唑(1)的水解产物的结构的修改以及(2-苯并咪唑基)氰基乙酰胺酸乙酯(3a)的性质。
Intramolecular cyclization of 6-amino-5-[2-substituted-2-(cyanovinyl)]amino-1,3-dimethyluracil: synthesis of 9-deazaxanthine derivatives and 8-(cyanomethyl)theophylline