REACTIONS OF β-ALKOXYVINYL TRIFLUOROMETHYL KETONES. THE SYNTHESIS OF N-[1-ARYL-3-OXO-4,4,4-TRIFLUORO-1-BUTEN-1-YL]-o-PHENYLENEDIAMINES AND 4-ARYL-2-TRIFLUOROMETHYL-3H-1,5-BENZODIAZEPINES
摘要:
A series of five N-[1-aryl-3-oxo-4,4,4-trifluoro-1-buten-1-yl]-o-phenylenediamines 2 [CF3COCH=C(R)NH-o-PhNH2], where R=Ph, 4-MePh, 4-BrPh, 4-ClPh, 4-OMePh from the reaction of beta-aryl-beta-methoxyvinyl trifluoromethyl ketones 1 with o-phenylenediamine was prepared and isolated in good yield (59-71%). Another series of five 4-aryl-2-trifluoromethyl-3H-1,5-benzodiazepines 3, where aryl=Ph, 4-MePh, 4-BrPh, 4-ClPh, 4-OMePh was also obtained in an one-step reaction from ketones 1 by an intramolecular cyclization reaction with o-phenylenediamine under mild acid conditions in good yields (60-77%).
Reactions of fluoroalkyl-containing lithium 1,3-diketonates with diaminoarenes and 2-aminobenzenethiol
作者:V. I. Filyakova、N. S. Boltacheva、D. V. Sevenard、V. N. Charushina
DOI:10.1007/s11172-010-0314-x
日期:2010.9
synthesized by the reaction of lithium 1,3-diketonates with 1,2-diaminobenzene and 2,3-diaminonaphthalene in an MeOH-AcOH-HCl mixture at 0 °C. The reactions of fluoroalkyl-containing lithium 1,3-diketonates with 1,2-diaminobenzene and 1,2-diamino-4,5-difluorobenzene under reflux in acetic acid afford 2-fluoroalkyl-containing benzimidazoles as the major products, whereas the reaction with 2-aminothiophenol