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Direct Synthesis of β-Aminoenals through Reaction of 1,2,3-Triazine with Secondary Amines
作者:Ryan E. Quiñones、Christopher M. Glinkerman、Kaicheng Zhu、Dale L. Boger
DOI:10.1021/acs.orglett.7b01543
日期:2017.7.7
Simple and direct nucleophilic addition of secondaryamines, including imidazole, to 1,2,3-triazine under mild reaction conditions (THF, 25–65 °C, 12–48 h), requiring no additives, cleanly provides β-aminoenals 4 in good yields (21 examples, 31–79%). The reaction proceeds by amine nucleophilic addition to C4 of the 1,2,3-triazine, in situ loss of N2, and subsequent imine hydrolysis to provide 4.
Monocyclic 1, 2, 3-triazines reacted with electron rich dienophiles to give pyridines and pyridazines. 4, 6-Disubstituted 1, 2, 3-triazine was denitrogenated to the azete intermediate, which afforded isomeric pyridines. 2, 5-Dihydrotriazines were oxidized by m-chloroperbenzoic acid to give 1, 2, 3-triazoles. Ring transformations of other triazine derivatives are also reported.
Scope of the Inverse Electron Demand Diels–Alder Reactions of 1,2,3-Triazine
作者:Erin D. Anderson、Dale L. Boger
DOI:10.1021/ol2007428
日期:2011.5.6
An examination of the scope of the inverse electron demand Diels–Alder reactions of the parent unsubstituted 1,2,3-triazine is described including the first report of its unique capabilities for participating in previously unexplored [4 + 2] cycloaddition reactions with heterodienophiles.
Fused tricyclic compounds as inhibitors of 17beta-hydroxysteroid dehydrogenase 3
申请人:Fink E. Brian
公开号:US20050250753A1
公开(公告)日:2005-11-10
Fused tricyclic compounds, methods of using such compounds in the treatment of hormone sensitive diseases such as prostate cancer, and pharmaceutical compositions containing such compounds.