title: Regioselective allylmetalation of allenes with tetraallylmanganate or allylmagnesium chloride under MnCl2 catalysis.
abstract: [reaction: see text] Treatment of allenes with tetraallylmanganate provides allylated products with high regioselectivity. A catalytic amount of MnCl(2) combined with allylmagnesium chloride also achieves efficient allylmetalation of allenes. The resulting alkenylmagnesium species react with various electrophiles. In the presence of molecular oxygen, the alkenylmagnesium undergoes diallylation reaction. A cyclization reaction of 1,2,6-heptatriene with tetraallylmanganate is also described.
authors: Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan.
authors: Toshihiro
authors: T
authors: Nishikawa
authors: Hiroshi
authors: H
authors: Shinokubo
authors: Koichiro
authors: K
authors: Oshima