Synthesis and Structure of Phosphanylated Bis-Triazoles as Potential Ligands for Chiral Catalysts
摘要:
Potential atropisomeric ligands, diphenylphosphane derivatives of bis-triazoles, were synthesized by direct phosphanylation of the starting bis-triazoles with chlorodiphenylphosphane. Their crystal structure was elucidated by X-ray diffractional analysis. The conformations of these compounds were modeled by DFT calculations.
An expeditious one-pot multicomponent synthesis of sterically hindered bis-1,2,4-triazolopyridazines under solvent-free conditions
作者:Ranjana Aggarwal、Mamta、Garima Sumran
DOI:10.24820/ark.5550190.p011.009
日期:——
6-disubstituted-bis-1,2,4-triazolo-[4,3-b:3',4'f]pyridazines was accomplished via a three-component reaction sequence between 3,6-dihydrazinopyridazine, an aromatic or heteroaromatic aldehyde and iodobenzene diacetate (IBD) on grinding at room temperature. The 3,6-bis-arylidenehydrazinopyridazine intermediates, generated in situ, undergo oxidative cyclization to afford the title compounds. The present protocol