[EN] AMINO SUBSTITUTED DIARYL [A, D] CYCLOHEPTENE ANALOGS AS MUSCARINIC AGONISTS AND METHODS OF TREATMENT OF NEUROPSYCHIATRIC DISORDERS [FR] ANALOGUES DIARYL[A,D]CYCLOHEPTÈNES SUBSTITUÉS PAR UN GROUPE AMINO COMME AGONISTES MUSCARINIQUES ET PROCÉDÉS DE TRAITEMENT DE TROUBLES NEUROPSYCHIATRIQUES
The tetramethylammonium-hydroxide-catalyzed oxidative coupling of amines and alcohols has been described for the synthesis of several heterocycles under metal-free conditions by utilizing oxygen from air as the terminaloxidant.
作者:Austin D. Marchese、Louise Kersting、Mark Lautens
DOI:10.1021/acs.orglett.9b02797
日期:2019.9.6
A scalable, diastereoselective nickel-catalyzed carboiodination reaction is reported that avoids metal-based reducing agents. Novel anti-dihydroquinolones and previously unreported tetrahydroquinolines are now readily prepared. The generation of anti-dihydroquinolones is noteworthy, as this selectivity is opposite to that of the Pd variant. Mechanistic insight into the nature of the nickel-catalyzed
carbonylation reaction for the synthesis of N‐acetyl benzoxazinones has been achieved for the first time. To avoid the using of toxic and flammable CO gas, formic acid was utilized as the CO source here. This carbonylative process is conducted under mild reaction conditions with high reaction efficiency. A variety of the desired N‐acetyl benzoxazinone products were obtained in moderate to excellent yields