期刊
RSC ADVANCES
卷 5, 期 81, 页码 66192-66199出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra11156k
关键词
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资金
- FCT/MEC [FCT UID/QUI/00062/2013]
- QREN, Mais Centro-Programa Operacional Regional do Centro [CENTRO-07-ST24-FEDER-002034]
- EU
- FEDER
- FCT [SFRH/BPD/79521/2011]
- CAPES (Brazil)-FCT (Portugal)
- CAPES
Ohmic heating offers a very efficient way of performing organic reactions using water as solvent. An efficient access to new coumarinyl porphyrin derivatives bearing pyrano[3,2-c]coumarin motifs at the beta-pyrrolic position of porphyrin macrocycles is disclosed by using this type of heating. The synthetic strategy involved a sequential Knoevenagel and hetero-Diels-Alder reaction between 2-vinyl-5,10,15,20-tetraphenylporphyrinatozinc(II) and alpha-methylenechromane derivatives generated in situ from 4-hydroxycoumarin and aromatic aldehydes in aqueous media. The results obtained under ohmic heating were compared with those obtained under conventional heating using water and also organic solvents.
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