J. Woller et al., NOVEL THIENOPYRIDINES AND PYRAZOLOPYRIDIN ES AS POTENTIAL PHARMACEUTICALLY ACTIVE COMPOUNDS, Die Pharmazie, 51(12), 1996, pp. 937-940
Cycloalkenocondensed chlorocyanopyridines 2 are synthesized from cyclo
alkylidenemalononitriles 1. Compounds 2 react with thioglycolacidester
s via thioethers 3 to thienopyridines 4 and with hydrazine to pyrazolo
pyridines 5.