Iminyl Radical-Triggered Intermolecular Distal C(sp3)-H Heteroarylation via 1,5-Hydrogen-Atom Transfer (HAT) Cascade
An efficient iron-catalyzed intermolecular remote C(sp3)-H heteroarylation of alkyl ketones has been developed via an iminyl radical-triggered 1,5-hydrogen-atom transfer (HAT) cascade. This protocol was amenable to a wide variety of alkyl ketones and heteroaryls, thus providing a straightforward method for the late-stage functionalization of alkylketones and heteroaryls.
Titanocene(II)-promoted desulfurizative acylation of thioacetals with alkanenitriles
Ketones were obtained in good yields by titanocene(II)-promoted reaction of thioacetals with alkanenitriles. The regioselective formation of α-substituted ketone was observed when the reaction was carried out in the presence of methyl iodide or benzyl bro
Takeda, Takeshi,Taguchi, Haruhiko,Fujiwara, Tooru
p. 65 - 68
(2007/10/03)
Experimental and theoretical studies on the reactivities of partially and fully fluorinated primary alkyl radicals
Absolute rate constants for hydrogen abstraction from n-Bu3SnH by a number of partially-fluorinated and fully fluorinated n-alkyl radicals have been measured. The C-H and C-C bond dissociation energies for a number of pertinent hydrofluorocarbons have been calculated by DFT. The rate data are compared with those for addition of the same radicals to styrene, and the reactivities of these radicals are discussed in terms of their electronegativies, their structure and the thermodynamics of their reactions.
Bartberger, Michael D.,Dolbier Jr., William R.,Lusztyk,Ingold
p. 9857 - 9880
(2007/10/03)
A CONVENIENT METHOD FOR THE DIRECT PREPARATION OF KETONES FROM 2-(6-(2-METHOXYETHYL)PYRIDYL) CARBOXYLATES AND ALKYL IODIDES BY USE OF ZINC DUST AND A CATALYTIC AMOUNT OF NICKEL DICHLORIDE
Treatment of 2-(6-(2-methoxyethyl)pyridyl) carboxylates with alkyl iodides in the presence of zinc dust and a catalytic amount of NiCl2 in DMF at 50 deg C affords unsymmetrical ketones in good yields by a one-pot procedure.
Onaka, Makoto,Matsuoka, Yoshio,Mukaiyama, Teruaki
p. 531 - 534
(2007/10/02)
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