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Synthesis of 4-phenylcoumarin from 2-hydroxybenzophenone imine and diethyl malonate by microwave assisted Knoevenagel condensation
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1  Departamento de Química Orgánica. Facultade de Ciencias. Universidade de Santiago de Compostela. Campus de Lugo. Alfonso X el Sabio, 27002-Lugo, Spain

Abstract: Three steps synthesis of neoflavonoid skeleton (4 hydroxybenzophenone imine was carried out in good yield. The key step is a microwave assisted solventless Knoevenagel condens decarboxylation is involved.