Functionalisation of aldehydes via aerobic hydroacylation of azodicarboxylates ‘on’ water
作者:Vijay Chudasama、Jenna M. Ahern、Dipti V. Dhokia、Richard J. Fitzmaurice、Stephen Caddick
DOI:10.1039/c0cc04520a
日期:——
Herein we report the functionalisation of aldehydesvia hydroacylation of azodicarboxylates. A range of functionalised aldehydes are employed as the limiting reagent including chiral non-racemic aldehydes bearing α-stereocentres which are functionalised giving access to enantiomerically pure products. The resultant hydrazides can be employed as acyl donors in the synthesis of amides.
A Unified Mechanism for the PhCOCOOH‐mediated Photochemical Reactions: Revisiting its Action and Comparison to Known Photoinitiators
作者:Nikoleta Spiliopoulou、Petros L. Gkizis、Ierasia Triandafillidi、Nikolaos F. Nikitas、Charikleia S. Batsika、Aikaterini Bisticha、Christoforos G. Kokotos
DOI:10.1002/chem.202200023
日期:2022.4
organic molecule, as a potent promoter in a variety of photochemical processes. Although PhCOCOOH has a broad scope of photochemicalreactions that can promote, the understanding of its mode of action in our early contributions was moderate. Herein, a thorough study led to a unified and revisited reactionmechanism for the PhCOCOOH-mediated reactions. A comparison to known photoinitiators was also performed
Visible-Light-Mediated Catalytic Hydroacylation of Dialkyl Azodicarboxylates by Graphite Flakes
作者:Giorgos S. Koutoulogenis、Maroula G. Kokotou、Errika Voutyritsa、Dimitris Limnios、Christoforos G. Kokotos
DOI:10.1021/acs.orglett.7b00519
日期:2017.4.7
A nova and efficient Metal-free catalyted hydroacylation of dialkyl azodicarboxylates is reported. Graphite flakes were found to be the most efficient catalyst among other carbon-based materials to prothote this reaction. This unprecedented catalytic activity can be expanded into a wide substrate scope of aliphatic aldehydes bearing various functional groups, leading to the corresponding products in good to excellent yields.