AbstractHerein, the synthesis of nitrogen‐containing heterocyclic scaffolds from heterocyclization of cyanoacetic acid hydrazide derivatives is described. Thiosemicarbazide derivative1aundergoes base‐mediated cyclization producing pyrazole derivative of type2. The triazolopyridine5was obtained by double cyclization of1aand benzylidene malononitrile. Compound1bcondensed with ethyl chloroformate to furnish pyrazolooxazine8. Compound1bwas added to benzoyl isothiocyanate under thermal condition to form oxadiazine derivative10while, keeping the above reactant under room temperature to form acyclic derivative11. Using CS2as a cyclizing agent for compound1byielded pyrazole derivative13. Treatment of1bwith I2resulted in oxidative cyclization producing pyridazine derivative14. Compound1ccyclized with benzoyl isothiocyanate forming triazolothiazine derivative18. While using cinnamoyl isothiocyanate, the acyclic product22was obtained. Compound1cwas condensed with formaldehyde leading to oxadiazole derivative25.
Selective functionalization of ferrocenyl compounds using a novel solvent free synthetic method for the preparation of bioactive unsymmetrical ferrocenyl derivatives
A novel solvent free syntheticmethod has been designed by using rice husk ash (RHA) as solid support for the selective functionalization of ferrocenyl derivatives and described the synthesis of a 1,1′‐unsymmetrically bi‐functionalized ferrocenyl compounds for their biological evaluation. Single crystal X‐ray structural evaluation showed some interesting intra‐molecular hydrogen bonding interactions
Electrolyte-Free Dye-Sensitized Solar Cell with High Open Circuit Voltage Using a Bifunctional Ferrocene-Based Cyanovinyl Molecule as Dye and Redox Couple
作者:A. Ghosh、S. Mishra、S. Giri、S. M. Mobin、A. Bera、S. Chatterjee
DOI:10.1021/acs.organomet.8b00104
日期:2018.7.9
ferrocenyl cyanovinyl compound as a dye with an electrolyte-free fabrication system showed an unprecedented open-circuitvoltage (VOC) of 763–841 mV. DFT calculations were carried out to understand an unique electron transfer mechanism for the DSSC device which may be responsible for the high VOC.