Formal Synthesis of Nitidine and NK109 via Palladium-Catalyzed Domino Direct Arylation/<i>N</i>-Arylation of Aryl Triflates
作者:Mathieu Blanchot、David A. Candito、Florent Larnaud、Mark Lautens
DOI:10.1021/ol200174g
日期:2011.3.18
The use of aryl triflates as reaction partners in a palladium-catalyzeddominodirectarylation/N-arylation provides a great advantage due to the availability of starting materials. Furthermore, it allows expedient access to biologically interesting benzo[c]phenanthridine alkaloids.
由于起始原料的可获得性,在钯催化的多米诺骨牌直接芳基化/ N-芳基化中使用芳基三氟甲磺酸酯作为反应伙伴具有很大的优势。此外,它允许方便地获得生物学上令人感兴趣的苯并[ c ]菲啶生物碱。
Copper-Catalyzed Synthesis of Phenanthridine Derivatives under an Oxygen Atmosphere Starting from Biaryl-2-carbonitriles and Grignard Reagents
作者:Line Zhang、Gim Yean Ang、Shunsuke Chiba
DOI:10.1021/ol101490n
日期:2010.8.20
A copper-catalyzedsynthesis of phenanthridine derivatives was developed startingfrom biaryl-2-carbonitriles and Grignard reagents. The present transformation is carried out by a sequence of nucleophilic addition of Grignard reagents to biaryl-2-carbonitriles to form N-H imines and their Cu-catalyzed C−N bond formation on the aromatic C−H bond, where molecular oxygen is a prerequisite to achieve the