Preparation and reactions of 2-zincated 2-cyclohexen-1-one and related heterocycles
作者:A.S Bhanu Prasad、Paul Knochel
DOI:10.1016/s0040-4020(97)10116-8
日期:1997.12
of a copper(I) catalyst or palladium(0) catalyst with an allylic bromide or alkenyl and aryliodides in satisfactory to good yields. Several of these products can further be cyclized leading diastereoselectively to a polyfunctional decaline 12 or a pyrrole derivative 13. A 6-zincated uracil reagent has also been prepared and reacted with aryliodides in the presence of a palladiumcatalyst leading to
Selective Cross-Coupling of Organic Halides with Allylic Acetates
作者:Lukiana L. Anka-Lufford、Michael R. Prinsell、Daniel J. Weix
DOI:10.1021/jo302086g
日期:2012.11.16
A general protocol for the coupling of haloarenes with a variety of allylic acetates is presented. Strengths of the method are a tolerance for electrophilic (ketone, aldehyde) and acidic (sulfonamide, trifluoroacetamide) substrates and the ability to couple with a variety of substituted allylic acetates. Secondary alkyl bromides can also be allylated under slightly modified conditions, demonstrating the generality of the approach. Finally, the coupling of a reactive vinyl halide could be achieved by the use of a very hindered ligand and more reactive, branched allylic acetates.
A New Reagent System for Modified Ullmann-Type Coupling Reactions: NiCl<sub>2</sub>(PPh<sub>3</sub>)<sub>2</sub>/PPh<sub>3</sub>/Zn/NaH/Toluene
作者:Guo-qiang Lin、Ran Hong
DOI:10.1021/jo001563w
日期:2001.4.1
Barkhash,V.A. et al., Journal of general chemistry of the USSR, 1964, vol. 34, p. 300 - 303