کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1323438 | 1499859 | 2015 | 4 صفحه PDF | دانلود رایگان |
• A simple and efficient catalytic system for Tishchenko reaction is presented.
• The redox reaction between aminopyrrolyl lithium and aldehyde was reported firstly.
• The initiated intermediate was characterized by NMR, elemental analysis and X-ray study.
The dimerization of aldehydes to the analogous carboxylic esters (Tischenko reaction) has been achieved in impressive yields using the dilithium compounds containing bidentate di-anionic pyrrolyl ligands as initiators. The initiated intermediate {[2-(tBuNCH)C4H3NLi][PhCH2OLi(TMEDA)]}2 was isolated and characterized by satisfactory C, H and N microanalysis, 1H, 13C{1H} and 7Li NMR spectra in pyridine-d5 at ambient temperature, and single crystal X-ray structural data. The processes involve a redox reaction of 2-aminopyrrolyl dilithium compound with aldehyde.
The dimerization of aldehydes (Tischenko reaction) has been achieved in impressive yields using 2-aminopyrrolyl dilithium compounds as initiators. The initiated intermediate {[2-(tBuNCH)C4H3NLi][PhCH2OLi(TMEDA)]}2 was isolated and characterized by microanalysis, NMR spectra and single crystal X-ray structural data. The processes involve a redox reaction of 2-aminopyrrolyl dilithium compound with aldehyde.Figure optionsDownload as PowerPoint slide
Journal: Journal of Organometallic Chemistry - Volume 783, 1 May 2015, Pages 73–76