An efficient Pd-catalyzed oxidative cyclization reaction for the synthesis of functionalized indolines by direct CâH activation of acetanilide has been developed. The norbornylpalladium species formed via direct ortho CâH activation of acetanilides is supposed to be a key intermediate in this transformation.
Strain versus flexibility: The palladium‐catalyzed reaction of haloalkynes with norbornene derivatives leads to 7‐alkynyl norbornane products (see scheme). Key to the success of this reaction is the formation of a “bridging” palladium species, which can rearrange to result in a C‐7 functionalization. The ring‐structure‐dependent [2+2] cycloaddition of haloalkynes with cyclooctene has been achieved in
carbopalladation reaction of haloalkynes is presented. Remarkably, the four‐time carbopalladation process converts the carbon‐carbon triple bonds of haloalkynes stepwise into carbon–carbon double bonds, and finally to carbon‐carbon single bonds. Features of this reaction are that the carbon‐carbon double bonds of stable vinyl palladium intermediates are transformed into carbon‐carbon single bonds with
Epoxidation of tetracyclodecene hydrocarbons with the H2O2·CO(NH2)2 adduct in the presence of heteropoly compounds containing rare-earth metal cations
作者:Kh. M. Alimardanov、O. A. Sadygov、N. I. Garibov、E. S. Musaeva、N. R. Dadashova、M. B. Almardanova
DOI:10.1134/s1070363217020098
日期:2017.2
Epoxidation of tetracyclododecene bridged hydrocarbons prepared via the [4+2]-condensation of bicyclo[2.2.1]hept-2-ene and its alkyl derivatives with cyclopentadiene in the presence of Н-form of synthetic mordenite has been studied. Phosphorus-molybdenum and phosphorus-tungsten heteropoly compounds doped with Co3+, Gd3+, Nd3+, Ce(4–x)+ (x = 0, 1) cations as well these compounds deposited on highly