Results 171 to 180 of about 4,972 (216)

Nitroarylstannanes as Synthons for the Preparation of Phenanthridine and Benzo[i]phenanthridine Derivatives

The Journal of Organic Chemistry, 2000
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Dajie Li, Baoping Zhao, Edmond J. LaVoie
openaire   +4 more sources

ChemInform Abstract: Synthesis and Characterization of Oxadisilole‐Fused Phenanthridines and Dioxatrisilole‐Fused Phenanthridines from Benzyne.

ChemInform, 2015
AbstractThe title phenanthridines are obtained by aza Diels—Alder reactions and dehydrogenation aromatization reactions of in situ generated benzyne with N‐benzylideneanilines.
Wang Xueli, Jie Chen, Kong Kundi, Weiguo Cao, Chen Jingda, Yali Chen   +5 more
openaire   +3 more sources

Synthesis of phenanthridine derivatives

Bulletin of the Academy of Sciences, USSR Division of Chemical Science, 1966
Hydrogenated derivatives of 9-arylphenanthridine are formed when 1-cyclohexenyl ethyl ether is reacted with Schiff bases in the presence of BF3.
openaire   +2 more sources

A New Synthesis of Phenanthridine Derivatives

HETEROCYCLES, 1983
AbstractDie Homophthalimide (I) werden mit Methylvinylketon (II) zu den Verbindungen (III) umgesetzt, die zu den isomeren Hexahydrophenanthridinonen (V) und (VI) cyclisiert werden.
Hideo Iida, Toshiyuki Takahashi, Toyohiko Kikuchi, Hiroshi Takayanagi, Mamoru Narimiya   +4 more
openaire   +2 more sources

Studies in the phenanthridine series—III

Tetrahedron, 1971
Abstract Kinetic data are reported for the quaternisation of several alkylphenanthridines and for the reactions of some 6-chlorophenanthridines with various nucleophiles. The enhanced (and anomalous) reactivity shown by 6-chloro-1,10-dimethylphenanthridine is explained in terms of relief of steric strain. NMR data and p K a , values are reported.
G.L. Turner, B.R.T. Keene
openaire   +2 more sources

ChemInform Abstract: Synthesis of Phenanthridine Derivatives via Photolysis.

ChemInform, 2011
An improved photochemical method for producing the prolifically bioactive phenanthridine system is reported. A wide variety of derivatives were obtained in two steps in yields ranging from 31 to 95%.
Stefan Bräse, Anna M. Linsenmeier, Anna M. Linsenmeier, Craig M. Williams   +3 more
openaire   +5 more sources

Preparation of Phenanthridines from o-Cyanobiaryls via Addition of Organic Lithiums to Nitriles and Imino Radical Cyclization with Iodine.

Journal of Organic Chemistry, 2018
Simple treatment of 2-cyanobiaryls with methyllithium, ethylmagnesium bromide, butyllithium, phenyllithium, p-methylphenyllithium, etc., followed by the reaction with water and then with molecular iodine at 60 °C provided efficiently 6-methyl-, 6-ethyl-,
Atsushi Kishi, K. Moriyama, H. Togo
semanticscholar   +1 more source

The chemotherapy of phenanthridine compounds

Journal of the Society of Chemical Industry, 1947
AbstractAn account is given of the preparation of various phenanthridine compounds and of their use in chemotherapy. Several of the compounds are curative of bovine trypanosomiasis, an African disease transmitted by the tsetse fly, and promise to be of great value in the African colonics.
openaire   +2 more sources

Combination of PhI(OAc)2 and 2-Nitropropane as the Source of Methyl Radical in Room-Temperature Metal-Free Oxidative Decarboxylation/Cyclization: Construction of 6-Methyl Phenanthridines and 1-Methyl Isoquinolines.

Journal of Organic Chemistry, 2018
A room-temperature metal-free method for generating highly unstable methyl radical was realized from the combination of PhI(OAc)2 and 2-nitropropane, which provides an efficient approach to methylated phenanthridines and isoquinolines.
Shi‐Chao Lu, Hongshuang Li, Yaling Gong, Shi-Peng Zhang, Ji-guo Zhang, Shu Xu   +5 more
semanticscholar   +1 more source

ChemInform Abstract: Synthesis of Functionalized Pyrido[1,2‐f]phenanthridines from Phenanthridine, Activated Acetylenes, and Arylidenemalononitriles.

ChemInform, 2012
Abstract The zwitterions generated from phenanthiridine and dialkyl acetylenedicarboxylates (DAADs) react with a variety of arylidenemalononitriles, affording substituted pyrido[1,2-f]phenanthridines.
Mahdi Hatamipour, Hossein Mehrabi
openaire   +3 more sources