Well-Defined Phosphine-Free Iron-Catalyzed N-Ethylation and N-Methylation of Amines with Ethanol and Methanol
摘要:
An iron(0) complex bearing a cyclopentadienone ligand catalyzed N-methylation and N-ethylation of aryl and aliphatic amines with methanol or ethanol in mild and basic conditions through a hydrogen autotransfer borrowing process is reported. A broad range of aromatic and aliphatic amines underwent mono- or dimethylation in high yields. DFT calculations suggest molecular hydrogen acts not only as a reducing agent but also as an additive to displace thermodynamic equilibria.
Über neue und verbesserte Wege zum Aufbau von pharmakologisch wichtigen Aminen. XIV. Über die Synthese von lobelin-ähnlichen β-Phenyläthylaminen
作者:Karl Kindler、Karl Schrader、Bernd Middelhoff
DOI:10.1002/ardp.19502830306
日期:——
[EN] PHARMACEUTICAL COMPOSITION FOR PREVENTING OR TREATING MITOCHONDRIAL DISEASES<br/>[FR] COMPOSITION PHARMACEUTIQUE POUR PRÉVENIR OU TRAITER DES MALADIES MITOCHONDRIALES<br/>[JA] ミトコンドリア病の予防または治療のための医薬組成物
An iron(0) complex bearing a cyclopentadienone ligand catalyzed N-methylation and N-ethylation of aryl and aliphatic amines with methanol or ethanol in mild and basic conditions through a hydrogen autotransfer borrowing process is reported. A broad range of aromatic and aliphatic amines underwent mono- or dimethylation in high yields. DFT calculations suggest molecular hydrogen acts not only as a reducing agent but also as an additive to displace thermodynamic equilibria.