Copper‐Catalyzed Synthesis of 3‐NO
<sub>2</sub>
Quinolines from
<i>o</i>
‐Azidobenzaldehyde and Nitro‐olefins and its Application in the Concise Synthesis of Quindolines
An efficient copper‐catalyzed cyclization of o‐azidobenzaldehyde and nitro‐olefins was developed. This reaction proceeds under solvent‐free conditions and displays broad functional group compatibility and affords 3‐nitroquinolines in good to excellent yields. The synthetic utility of this strategy is illustrated by the concise construction of quindolines in only three steps, which renders the reaction
A chiral phosphoric acid catalyzed asymmetric transfer hydrogenation of aromaticamines, quinolin-3-amines, was successfully developed with up to 99% ee. To supplement our previous work on the Ir-catalyzed asymmetrichydrogenation of 2-alkyl substituted quinolin-3-amines, a number of 2-aryl substituted substrates were reduced to provide a series of valuable chiralexocyclicamines with high diastereo-
e approach was developed to access a series of fluorinatedheteroaromatics in moderate to excellent yields. This one‐pot procedure features a triple‐relay transformation of rapid dearomatization, fluorination, and rearomatization processes, which represents a conceptually novel strategy of combining partial hydrogenation and electrophilic fluorination.