dual-nucleophile is disclosed. This straightforward strategy assembles the optically active (R)-2-alkyl 3-nitro-2H-chromenes with good to excellent enantioselectivities (up to 93% ee) and a broad substrate scope. Preliminary in vitro antibacterial evaluation revealed most of the chiral 3-nitro-2H-chromene derivatives exhibit antibacterial activities against four Gram-positive bacteria. Compound 3p with two bromine
A highly efficient and enantioselectiveintramolecularcrossedRauhut–Currier (RC) reaction of nitroolefins with tethered enonates has been developed throughcooperativenucleophilicactivation and a hydrogen‐bonding catalytic strategy (≤98 % ee and 98 % yield). The reaction features simple experimental procedures and is completely chemoselective and atom‐economic in character. The potential synthetic