different formaldoximes, can efficiently undergo this transformation. The method features visible light-induced generation of nucleophilic hybrid alkyl Pd radical intermediates, which upon radical addition at the imine moiety and a subsequent β-hydrogen elimination deliver substituted imines.
Bis(tri-n-butylstannyl)benzopinacolate: Preparation and use as a mediator of intermolecular free radical reactions
作者:David J. Hart、Ramanarayanan Krishnamurthy、Lori M. Pook、Franklin L. Seely
DOI:10.1016/s0040-4039(00)61484-3
日期:1993.12
Bis(tri-n-butylstannyl)benzopinacolate (2) serves as a thermal source of tri-n-butylstannyl radicals and mediates intermolecular coupling of selected alkyl halides to O-benzylformaldoxime and electron deficient olefins. A free radical non-chain mechanism is proposed for these reactions.
Bis(trimethylstannyl)benzopinacolate-mediated intermolecular free-radical carbon-carbon bond-forming reactions: a new one-carbon homologation
作者:David J. Hart、Franklin L. Seely
DOI:10.1021/ja00213a051
日期:1988.3
Formation d'hydroxylamines organiques a partir d'hydrocarbures halogenes et de la benzyloxime du formaldehyde, par l'intermediaire du compose du titre comme source de radicaux stannyles
Formation d'hydroxyamines Organiques a partir d'hydrocarbureshales et de la benzyloxime du formaldehyde, par l'intermediaire du compose du titre comme source de radicaux stannyles
One-Pot Synthesis of Alkoxyamine Derivatives by Reductive Alkoxyamination with a 2-Picoline-Borane Complex
Reduction of oxime ethers with a 2-picoline-borane complex was examined to give alkoxyamine derivatives. The reduction was found to proceed in the presence of aqueous HCl in MeOH-AcOH. The method was extended to one-pot synthesis of alkoxyamine derivatives from aldehydes and ketones. The reaction of carbonyl compounds with alkoxyamines in MeOH-AcOH (10:1), followed by sequential treatment with 2-picoline-borane and 3M HCl afforded alkoxyamine derivatives in good yields. This procedure can be applied to the synthesis of various alkoxyamine derivatives from aliphatic/aromatic aldehydes and ketones.
HART, DAVID J.;SEELY, FRANKLIN L., J. AMER. CHEM. SOC., 110,(1988) N 5, 1631-1633