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Abstract
Clean and eco-friendly microwave-assisted cyclocondensation of different aryl aldehydes with pyrrole forms 5,10,15,20-tetraaryl porphyrins in 20 to 43% yields in very low amount of propionic acid in one step is presented.
ACKNOWLEDGMENTS
We are thankful to Professor R.N. Khanna for providing the microwave oven. We are also thankful to the Department of Science and Technology (DST) and Council of Scientific and Industrial Research (CSIR), New Delhi, India, for financial support.