a All yields reported are isolated yields after silica gel flash column chromatography. b 3.0 equiv of nitro(hetero)arene and 3.0 equiv of LiHMDS were used instead of the normal conditions. c Regiochemistry was confirmed by X-ray crystallography. d 2.0 equiv of nitro(hetero)arene were used. e 6.0 equiv of LiHMDS were used. See supplementary information for full experimental details and for a list of substrates that failed to give the ONSH product.