Chiral copper(II) phosphate catalyzed enantioselective synthesis of isochromene derivatives by sequential intramolecular cyclization and asymmetric transfer hydrogenation of o-alkynylacetophenones.
Department of Chemistry, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588 (Japan).
Kodai
K
Saito
Yuki
Y
Kajiwara
Takahiko
T
Akiyama
asymmetric catalysis; copper; heterocycles; hydrogenation; ylides