Synthesis of 3,7-disubstituted hexahydro- and tetrahydro-2H-indazoles from cross-conjugated dienones
摘要:
The oxidation of 3,7-disubstituted hexahydroindazoles with potassium hexacyanoferrate(III) afforded previously unknown tetrahydro-2H-indazole derivatives. A novel ring contraction reaction leading to 2,3-diazaspiro[4.4]non-3-en-1-one derivatives was discovered. The product structure was proved by NMR spectroscopy, mass spectrometry, and X-ray analysis.
Synthesis and antimicrobial activity of novel tetrabromo-α,α’-bis(substituted-benzyl)cycloalkanones
作者:Rahman Motiur、Sayed Alam、Adnan Kadi
DOI:10.2298/jsc110408005m
日期:——
A series of novel tetrabromo-bis(substituted benzyl)cycloalkanones have been synthesized through a rapid, simple, and efficient methodology in an excellent isolated yield and characterized via IR, NMR ( 1 H-, 13 C-NMR, DEPT 135, DEPT 90) and mass spectrometry. All compounds were assayed for their in vitro antimicrobial activities against eight bacteria and five fungi. They showed stronger antibacterial