Organocatalytic Asymmetric Friedel−Crafts Alkylation/Cyclization Cascade Reaction of 1-Naphthols and α,β-Unsaturated Aldehydes: An Enantioselective Synthesis of Chromanes and DihydrobenzopyranesLiang Hong, Rui Wang, Wangsheng Sun et al.|The Journal of Organic Chemistry|2009Cited by 106