A straightforward synthesis of β-carbolinones by the Bischler– Napieralski-type cyclization of the corresponding trichloromethyl carbamates, which does not require acids, bases, oxidants, or transition-metals to promote the cyclization, has been achieved. INTRODUCTION β-Carbolinone alkaloids are a diverse group of biologically active indole alkaloids, e.g., rhetsinine, strychnocarpine, bauerine C,
Palladium-Catalyzed Cross-Coupling Reactions of Potassium N-Methyltrifluoroborate Isoindolin-1-one with Aryl and Heteroaryl Chlorides
作者:Rashid N. Nadaf、Dave G. Seapy
DOI:10.1080/00397911.2014.884591
日期:2014.7.18
Abstract Potassium N-methyltrifluoroborate isoindolin-1-one was synthesized and used in Suzuki–Miyaura palladium-catalyzed cross-coupling reactions with aryl and heteroaryl chlorides to prepare 29 examples of substituted N-benzyl isoindolin-1-ones. The new approach benefits from mild reaction conditions that tolerate a variety of functional groups. In addition, because of the large number of commercially