Enantioselective Synthesis of Cyclopropanone Equivalents and Application to the Formation of Chiral β‐Lactams
作者:Christopher M. Poteat、Yujin Jang、Myunggi Jung、J. Drake Johnson、Rachel G. Williams、Vincent N. G. Lindsay
DOI:10.1002/anie.202006786
日期:2020.10.12
derivatives have long been considered unsustainable synthetic intermediates because of their extreme strain and kinetic instability. Reported here is the enantioselective synthesis of 1‐sulfonylcyclopropanols, as stable yet powerful equivalents of the corresponding cyclopropanone derivatives, by α‐hydroxylation of sulfonylcyclopropanes using a bis(silyl) peroxide as the electrophilic oxygen source. This
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
HART, DAVID J.;SEELY, FRANKLIN L., J. AMER. CHEM. SOC., 110,(1988) N 5, 1631-1633
作者:HART, DAVID J.、SEELY, FRANKLIN L.
DOI:——
日期:——
Metal-Free, Redox-Neutral, Site-Selective Access to Heteroarylamine via Direct Radical–Radical Cross-Coupling Powered by Visible Light Photocatalysis
common structure found in drug agents, natural products and fine chemicals. Reported herein is an alternative access to heteroarylamine via radical-radical cross-coupling pathway, powered by visible light catalysiswithout any aid of externaloxidant and reductant. Only by visible light irradiation of a photocatalyst such as a metal-free photocatalyst, a cascade single electron transfer event of amines