Synthesis and properties of some polycyclic barbiturate pigments

Microplastic in three urban estuaries, China

“…Colored plastics have been detected in fish, birds and turtles (Foekema et al, 2013;Hoarau et al, 2014;Trevail et al, 2015). On the other hand, prominence of colored plastics in our study is consistent with the fact that coloration is a common practice to enhance the market appeal of plastic products (Thetford et al, 2003).…”

Chemistry and application of 4‐oxo‐4H‐1‐benzopyran‐3‐carboxaldehyde

“…The compound 125 can even be obtained by just grinding a mixture of the reactants in solid state without any solvent at room temperature [122]. The chromone 1 has also been condensed with several other pyrazolinones [99,123,124], barbituric acid [125], thiobarbituric acid [99,123,126], hydantoin, thiohydantoin [127,128], chromanone [129], azlactone [123,130,131] conditions [101,133] are known. Isopropylidene malonate and 2,4-thiazolidinedione have also been condensed with 1 under microwave irradiation [119].…”

Stereoselective synthesis of diazaspiro[5.5]undecane derivatives via base promoted [5+1] double Michael addition of N,N-dimethylbarbituric acid to diaryliedene acetones

“…In addition, recent literature review suggests that the diazaspiro [5.5]undecane-1,3,5,9-tetraones motif has a wide range of therapeutic and biological properties such as CNS depressant , anticonvulsant (Rajopadhye and Popp, 1988), potent sedative-hypnotic (Kesharwani et al, 2009), antibacterial (Goel et al, 2005) and fungicidal (Behera et al, 2009). Moreover, these types of compounds can also be used as a yellow organic pigment and as a disperse dye with strong fluorescence property as it contains barbituric acid moiety (Theford et al, 2003;Karci, 2008;Wang and Kim, 2009). Due to their unique structural features, it has become one of the prominent research areas to the chemist.…”