In this paper we have presented a green and novel method for the synthesis. We have carried out the synthesis of benzylidenemalononitriles by Knoevenagel condensation in solvent free environment at room temperature by using microwave and sonicator. Excellent yields were obtained in very short duration. Twelve principles of green chemistry which are universally accepted for protection of environment as well as human health from chemical pollution were used. Green synthesis provides an excellent yield with the higher purity and high atom economy. Here we have also presented the comparison of the speed of completion of reaction in microwave and sonicator and the yields obtained.
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