KI Catalyzed Nitrogenation of Aldehydes and Alcohols: Direct Synthesis of Carbamoyl Azides and Ureas
作者:Song Song、Peng Feng、Miancheng Zou、Ning Jiao
DOI:10.1002/cjoc.201600914
日期:2017.6
An efficient KI catalyzed nitrogenation of aldehydes and alcohols for the direct synthesis of carbamoylazides and ureas via a radical process has been developed. The simple operating procedures, the readily available starting materials including aldehydes, alcohols and amines, as well as the utility of the products all make this strategy very attractive.
functionalization of ketones through double C–C bond cleavage strategy has been disclosed. This reaction provides a mild, practical method toward carbamoyl azides, which are versatile intermediates and buildingblocks in organicsynthesis. Based on relevant mechanistic studies, a unique and plausible C–C bond and N–O bond cleavage process is proposed, where the oxyamination intermediate plays an important
A novel method was developed for the synthesis of carbamoyl azides from hydroxamic acids via the Lossen rearrangement using diphenyl phosphorazidate, which acts as both the activator and azide source to produce the azidesvia an isocyanate intermediate. Using this method, various hydroxamic acids were converted into the corresponding carbamoyl azides, enabling their preparation without the use of highly
One-Pot Synthesis of Carbamoyl Azides via Palladium-Catalysed Azidocarbonylation of Haloarenes Using N-Formylsaccharin as a CO Surrogate
作者:Lal Yadav、Vinod Yadav、Vishnu Srivastava
DOI:10.1055/s-0036-1588316
日期:——
A highly efficientone-pot synthesis of carbamoyl azides from haloarenes and sodium azide has been developed. The protocol involves palladium-catalysed azidocarbonylation of haloarenes utilizing N -formylsaccharin as a CO source to form acyl azides, which undergo in situ Curtiusrearrangement to afford the desired carbamoyl azides. N -Formylsaccharin is an easy-to-handle solid alternative to CO gas
已经开发出一种由卤代芳烃和叠氮化钠高效一锅法合成氨基甲酰基叠氮化物的方法。该协议涉及钯催化的卤代芳烃的叠氮羰基化,利用 N-甲酰基糖精作为 CO 源形成酰基叠氮化物,其进行原位 Curtius 重排以提供所需的氨基甲酰基叠氮化物。N-甲酰基糖精是一种易于处理的固体替代 CO 气体。