Versatile Access to Chiral Indolines by Catalytic Asymmetric Fischer Indolization
作者:Alberto Martínez、Matthew J. Webber、Steffen Müller、Benjamin List
DOI:10.1002/anie.201301618
日期:2013.9.2
for complexity: The chiral Brønsted acid (R)‐STRIP catalyzes the asymmetricFischerindolization of a range of monosubstituted cyclopentanones and cyclohexanones to give chiral fused indolines bearing a quaternary stereogenic center at the 3‐position. The method has been extended to include substrates bearing a tethered nucleophile, thus allowing for enantioselective indolization/ring‐closing cascades