Visible-light-mediated α-arylation of enol acetates using aryl diazonium salts
Visible light mediates efficiently the α-arylation of enol acetates by aryl diazonium salts under mild conditions using [Ru(bpy)3]Cl 2 as a photoredox catalyst. The broad scope of the reaction toward various diazonium salts and enol acetates was explored. The application of this reaction in the concise synthesis of 2-substituted indoles was demonstrated
Hering, Thea,Hari, Durga Prasad,Koenig, Burkhard
p. 10347 - 10352
(2013/01/15)
NUCLEOPHILIC SUBSTITUTION p-DINITROBENZENE WITH SOME CARBANIONS. FORMATION OF p-SUBSTITUTED NITROBENZENES
Treatment of p-dinitrobenzene with active methylene compounds of rather weak acidity in the presence of t-BuOK in liq NH3 at -70'C leads to nucleophilic substitution of a nitro group, giving p-substituted nitrobenzenes in generally good yields.
Iwasaki, Genji,Saeki, Seitaro,Hamana, Masatomo
p. 31 - 34
(2007/10/02)
A NOVEL NUCLEOPHILIC SUBSTITUTION OF THE FORMYL GROUP IN p-NITROBENZALDEHYDE WITH SOME CARBANIONS
p-Nitrobenzaldehyde reacts with some active methylene compounds in the presence of a strong base at low temperatures to give p-substituted nitrobenzenes by the two-step course involving the initial formation of the aldol adducts and the subsequent displacement of the carbinol moieties with excess carbanions.
Iwasaki, Genji,Saeki, Seitaro,Hamana, Masatomo
p. 173 - 176
(2007/10/02)
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