jo051524q_si_001.pdf (10.59 MB)
Silver(I)-Catalyzed Novel Cascade Cyclization Reactions: Incorporation of Allenes into the Isochromenes
journal contribution
posted on 2005-11-25, 00:00 authored by Nitin T. Patil, Nirmal K. Pahadi, Yoshinori YamamotoThe silver(I)-catalyzed reaction of alkynones with alcohols
represents a general tool for the synthesis of 1-allenyl
isochromenes. The reaction most probably proceeds via the
formation of benzopyrylium cation, which subsequently
undergoes nucleophilic attack of an alcohol to give the
annulation products.