标题：chiral 1h nmr of atropisomeric quinazolinones with enantiopure phosphoric acids
abstact：a chiral phosphoric acid promoted enantioselective nmr analysis of atropisomeric quinazolinones was described, in which a variety of racemic arylquinazolinones such as afloqualone and ic-87114 were well recognized with up to 0. 21 ppm 11δ value. with this method, the optical purities of different non-racemic substrates can be fast evaluated with high accuracy.
