Catalytic Tandem Friedel–Crafts Alkylation/C4–C3 Ring-Contraction Reaction: An Efficient Route for the Synthesis of Indolyl Cyclopropanecarbaldehydes and Ketones
A general strategy for the synthesis of indolyl cyclopropanecarbaldehydes and ketones via a Brønsted acid-catalyzed indole nucleophilic addition/ring-contraction reaction sequence has been exploited. The procedure leads to a wide panel of cyclopropyl carbonyl compounds in generally high yields with a broad substrate scope.
Visible light promoted continuous flow photocyclization of 1,2-diketones
作者:Francesco Secci、Stefania Porcu、Alberto Luridiana、Angelo Frongia、Pier Carlo Ricci
DOI:10.1039/d0ob00532k
日期:——
The continuous flow Norrish-Yang photocyclization of 1,2-diketones has been developed and used for the synthesis of a large number of functionalized 2-hydroxycyclobutanones, under blue light irradiation and employing acetone as a solvent. This eco-friendly procedure represents a valid alternative to the reactions carried out in batches thus reducing the reaction times, the formation of secondary products
SHRIDHAR, D. R.;SASTRY, C. V. R.;LAL, B.;SINGH, P. P.;RAO, C. S.;JUNNARKA+, INDIAN J. CHEM., 1981, 20, N 4, 311-313
作者:SHRIDHAR, D. R.、SASTRY, C. V. R.、LAL, B.、SINGH, P. P.、RAO, C. S.、JUNNARKA+
DOI:——
日期:——
Iron-catalyzed aerobic oxidative cleavage of the C–C σ-bond using air as the oxidant: chemoselective synthesis of carbon chain-shortened aldehydes, ketones and 1,2-dicarbonyl compounds
作者:Qi Xing、Hui Lv、Chungu Xia、Fuwei Li
DOI:10.1039/c5cc07390a
日期:——
A simple iron-catalyzed aerobic oxidative C-C [sigma]-bond cleavage of ketones has been developed. Readily available and environmently benign air is used as the oxidant. This reaction prevents the use of...
Insights into the Reactivity of 2-Hydroxycyclobutanones with Thiols Corroborated by Quantum Chemical DFT Investigations and NMR and Raman Analysis
作者:Armando Carlone、Francesco Secci、Stefania Porcu、Maria Chiara Cabua、Viktoria Velichko、Jean-Pierre Baltaze、Angelo Frongia、Carlo Maria Carbonaro、Pier Carlo Ricci、Drew Francis Parsons
DOI:10.1055/a-1912-1096
日期:2022.12
broad substrate scope. Mechanistic aspects and kinetic parameters were investigated by quantum chemical DFT calculations, allowing us to rationalize the different reactivity of 2-aryl- and 2-alkyl-substituted 2-hydroxycyclobutanones towards thiol nucleophiles in reactions mediated by sulfonicacids. NMR and in situ Raman techniques were employed to better understand the reaction kinetics and parameters