batch and continuous flow preparation of hantzsch 1,4-dihydropyridines under microwave heating and simultaneous real-time monitoring by raman spectroscopy. an exploratory study
;Sylvain Christiaens;Xavier Vantyghem;Marilena Radoiu;Jean Jacques Vanden Eynde
Journal of ethnopharmacology2014Vol. 19pp. 9986-9998
191
christiaens2014moleculesbatch
Abstract
Dialkyl 1,4-dihydro-2,6-dimethylpyridine-3,5-dicarboxylates have been prepared in a batch mode under conventional heating as well as under continuous flow conditions in the Miniflow 200SS, Sairem’s microwave-assisted batch and continuous flow equipment. Real-time monitoring of the reactions by Raman spectroscopy enabled to compare both heating modes and to determine (optimized) reaction times.