Copper(I)-catalyzed cross-coupling reaction of acylzirconocene complexes with allylic and/or propargylic halides
作者:Yuji Hanzawa、Kensuke Narita、Takeo Taguchi
DOI:10.1016/s0040-4039(99)02015-8
日期:2000.1
Efficient cross-coupling reaction of acylzirconocene chloride with allylic and/or propargylic halides was attained by utilizing a catalytic amount of a Cu(I) salt to give allylic and/or allenic ketones, respectively, in good yields. The mild Cu(I)-catalyzed reaction of acylzirconocene chloride offered an alternative protocol for the generation of an ‘unmasked’ acyl anion.
purpose of exploring a new reaction of acylzirconocene chloride as an acyl anion donor, Cu(I)-catalyzed cross-coupling and conjugate additionreactions of acylzirconocene chloride were studied. The coupling reaction with allylic or propargylic halides efficiently proceeded to yield β,γ-unsaturated ketone or allenyl ketone derivatives, respectively. The conjugated additionreaction to α,β-enones was carried