Bo-Qi Gu, Hao Zhang, R. Su
Oct 13, 2016
Citations
0
Influential Citations
16
Citations
Journal
Tetrahedron
Abstract
Abstract An organocatalytic asymmetric [4+2] eliminative cycloaddition reaction of 2-methyl-indolyl methylenemalononitriles with α,β-unsaturated aldehydes via in situ generated indole-ortho-quinodimethane intermediates has been developed. This approach provides straightforward access to 2,9-dihydro-1H-carbazole-3-carbaldehydes, as well as its analogous dihydrodibenzofuran and dihydrodibenzothiophene in good yields and with high enantioselectivities.