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a) Biginelli three‐component reaction under solvent‐free microwave conditions. b) Rajender S. Varma (on the right) and Dalip Kumar in front of their kitchen microwave in Huntsville, Texas on December 8, 1998. c) Panasonic kitchen microwave oven with turntable containing a crystallization dish filled with alumina. d) Detailed view showing 10 beakers (20 mL) inside the alumina bath for performing parallel microwave chemistry.
