Photocatalytic activation of pyridine for addition reactions: an unconventional reaction feature between a photo-induced hole and electron on TiO<sub>2</sub>
TiO2 photocatalysis has the ability to furnish a class of coordinated anti-Markovnikov addition reactions between vinylarenes and pyridines. Such pyridine addition reactions occur through a previously undescribed concerted pathway.
Rearrangemnets of organometallic compounds. 23. Carbon-skeletal [1,2] anionic and radical sigmatropic rearrangements: group migratory aptitudes as a probe of charge type in the 1,2-shifts of .beta.-phenyl-.beta.-(2-pyridyl)- and .beta.-phenyl-.beta.-(4-pyridyl)ethyl systems
作者:John J. Eisch、Csaba A. Kovacs、Prabodh Chobe、Marek P. Boleslawski
DOI:10.1021/jo00229a001
日期:1987.10
Charge Migration in Dicationic Electrophiles and Its Application to the Synthesis of Aza-polycyclic Aromatic Compounds
作者:Ang Li、Patrick J. Kindelin、Douglas A. Klumpp
DOI:10.1021/ol060125u
日期:2006.3.1
Superacid-promoted reactions of dicationic electrophiles have been studied, and the positive charge centers are found to migrate apart in a predictable manner. Using isotopic labeling the charge migration is found in one system to occur through successive deprotonation-reprotonation steps. The charge migration chemistry is the basis for new general synthetic route to aza-polycyclic aromatic compounds.
EISCH, JOHN J.;KOVACS, CSABA A.;CHOBE, PRABODH;BOLESLAWSKI, MAREK P., J. ORG. CHEM., 52,(1987) N 20, 4427-4437
作者:EISCH, JOHN J.、KOVACS, CSABA A.、CHOBE, PRABODH、BOLESLAWSKI, MAREK P.
DOI:——
日期:——
Transition‐Metal‐Free Intermolecular Hydrocarbonation of Styrenes Mediated by NaH/1,10‐Phenanthroline
AbstractA transition‐metal‐free intermolecular coupling reaction of halocompounds with styrenes in the presence of NaH and 1,10‐phenanthroline was developed. This reaction afforded hydrocarbonated products with complete anti‐Markovnikov selectivity. The method allows the use of a wide range of halocompounds, including aryl and alkyl halides, and good functional group tolerance. Detailed mechanistic studies indicated that an anilide anion generated in situ by the NaH‐mediated reduction of 1,10‐phenanthroline works as an electron donor and a hydrogen source.