Ring Closure Reactions of Adducts of Methacryloyl Isocyanate to Arylhydrazines and Their Related Componds
摘要:
Methacryloyl isocyanate (MAI) reacted with arylhydrazines (1) to give semicarbazides (2) in good yields. Treatment of 2 with aqueous potassium hydroxide gave the corresponding 1-aryl-3-hydroxy-1,2,4-triazoles (3), whereas thermal ring closure of 2 afforded isomeric 2,3-dihydro-2-aryl-1,2,4-triazole-3(1H)-ones (4). MAI reacted with benzamidine to give directly 1,3,5-triazine-2(1H)-one (10) by the loss of water. On the other hand, the reaction of MAI with 1,3-diphenylguanidine afforded the 1:1 adduct (11), which on thermal decomposition gave the perhydropyrimidin-6(1H)-one (12) and perhydro-1,3,5-triazine-2,6-dione (13). The pathways for the formation of 4, 12 and 13 are also described.
A method of obtaining information about a chemically active area of a target molecule, for example for drug discovery, comprising:
providing a set of substantially rigid chemical gauges;
reacting said target with a plurality of gauges of said set of gauges;
assaying a binding of said gauges with said target to obtain a plurality of assay results; and
analyzing said assay results to obtain information about said chemically active area.
Several 1,3, 5-triazine-2,4(1H, 3H)-diones (1 - 5) were newly synthesized by the reaction of N-substituted thiocarboamides with silver cyanate. The structure was confirmed by the X-Ray structure analysis, and the pathway affording them was estimated.
US8019550B2
申请人:——
公开号:US8019550B2
公开(公告)日:2011-09-13
US9405885B2
申请人:——
公开号:US9405885B2
公开(公告)日:2016-08-02
Ring Closure Reactions of Adducts of Methacryloyl Isocyanate to Arylhydrazines and Their Related Componds
作者:Otohiko Tsuge、Taizo Hatta、Ryuzo Mizuguchi
DOI:10.3987/com-93-6560
日期:——
Methacryloyl isocyanate (MAI) reacted with arylhydrazines (1) to give semicarbazides (2) in good yields. Treatment of 2 with aqueous potassium hydroxide gave the corresponding 1-aryl-3-hydroxy-1,2,4-triazoles (3), whereas thermal ring closure of 2 afforded isomeric 2,3-dihydro-2-aryl-1,2,4-triazole-3(1H)-ones (4). MAI reacted with benzamidine to give directly 1,3,5-triazine-2(1H)-one (10) by the loss of water. On the other hand, the reaction of MAI with 1,3-diphenylguanidine afforded the 1:1 adduct (11), which on thermal decomposition gave the perhydropyrimidin-6(1H)-one (12) and perhydro-1,3,5-triazine-2,6-dione (13). The pathways for the formation of 4, 12 and 13 are also described.