The synthesis and characterization of novel soluble phthalocyanines substituted with 7-octyloxy-3-(4-oxyphenyl)coumarin moieties

Kinetics of Base Hydrolysis of Some Chromen-2-one Indicator Dyes in Different Solvents at Different Temperatures

“…In addition, these compounds are involved in the actions of plant growth hormones, growth regulators, the control of respiration and photosynthesis. Chromen-2-one derivatives have also found applications as fluorescent dyes, 3,4 antiinflammatory agents, 5 antineoplastic agents, 6 immunomodulant agents 7 antifungals, 8 anticoagulants, 9 antibacterials, 10 antimicrobial 11,12 insecticides 13 and proliferators of HIV. 14,15 HC is widly used in estimation of enzymatic activity as fluorigenic enzyme substrates 16 and acts as a pH indicator in the range 6.5-8.…”

L-Proline as an efficient and reusable promoter for the synthesis of coumarins in ionic liquid

“…Furthermore, although P(RNCH 2 CH 2 ) 3 N as an efficient promoter (Kisanga et al, 2002) has been introduced recently, the reaction has to be conducted in benzene or isobutyronitrile, which are not environmentally friendly solvents. Alternatively, coumarins could also be synthesized by other methods including Pechmann (Gu et al, 2005;Fang et al, 2008), Perkin (Camur and Bulut, 2008), Reformatsky (Chen et al, 2005), Wittig (Yavari et al, 1998) reactions, and by flash vacuum pyrolysis (Cartwright and McNab, 1997).…”

Synthesis, characterization, spectroscopic and electrochemical properties of phthalocyanines substituted with four 3-ferrocenyl-7-oxycoumarin moieties

“…3-Ferrocenyl-7-hydroxycoumarin (1) was synthesized by the reaction of ferroceneacetic acid with 2,4-dihydroxybenzaldehyde via Perkin reaction [36]. 7-(3,4-Dicyanophenoxy)-3-ferrocenylcoumarin (2) was synthesized through basecatalyzed aromatic nitro displacement of 4-nitrophthalonitrile with 1 using K 2 CO 3 as the base in dry DMF.…”