title: Synthesis of isochromene esters utilizing 1,6-addition of nucleophiles to benzopyranylidenetungsten(0) complexes.
abstract: [reaction: see text] A concise method for the preparation of isochromene carboxylates has been developed by the regioselective 1,6-addition of various nucleophiles such as Grignard reagents, alkoxide, and cyanide onto benzopyranylidenetungsten(0) complexes, followed by iodine oxidation of the addition intermediates.
authors.affiliation: Department of Chemistry, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8551, Japan.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Kusama
authors.forename: Takahiro
authors.initials: T
authors.lastname: Sawada
authors.forename: Atsushi
authors.initials: A
authors.lastname: Okita
authors.forename: Fumiyasu
authors.initials: F
authors.lastname: Shiozawa
authors.forename: Nobuharu
authors.initials: N
authors.lastname: Iwasawa