Intermolecular photodecarboxylation of electron-deficient substrates by phthalimides in water: efficiency, selectivity and online monitoring
作者:Axel G. Griesbeck、Nestor Nazarov、Jörg M. Neudörfl、Maria Heffen
DOI:10.1039/c2gc36089f
日期:——
The intermolecular photodecarboxylation of arylacetic acids 3–5 in water by use of stoichiometric amounts of N-alkylated phthalimides 1a,b was investigated by NMR and online pH- and CO2-release sensing. Decreasing the electron donor capability of the arylacetic acids by 4-fluoro and trifluoromethyl substitution alters the efficiency of the photodecarboxylation and selectivity of the secondary reaction. A remarkable switch in reaction channel (A to B) was observed for perfluoropropionic acid.