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Choline chloride. ZnCl2: Green,effective and reusable ionic liquid for synthesis of 7-amino-2,4-dioxo-5-phenyl-2,3,4,5-tetrahydro-1H-pyrano [2,3-d] pyrimidine-6-carbonitrile derivative
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نویسنده
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yadav d.k. ,quraishi m.a.
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منبع
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journal of materials and environmental science - 2014 - دوره : 5 - شماره : 4 - صفحه:1075 -1078
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چکیده
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Pyrano [2,3-d] pyrimidines could be synthesized using lewis acid ionic liquid choline chloride. zncl2 and triethanolamine as catalyst,as well as aromatic aldehydes,malononitrile and barbituric acid or 2-thiobarbituric acid as substrates. the ionic liquid showed good catalytic activity and reusable performance under mild conditions. the reaction proceeds smoothly under ultrasonic irradiation at 75 °c. this method provides several advantages such as being environmentally friendly,using a simple workup procedure,shorter reaction time and affording good yields.
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کلیدواژه
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Green chemistry; Ionic liquids; Multicomponent reactions; Pyrano [2 ,3-d] pyrimidines; Ultrasound technique
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آدرس
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department of ceramic engineering,indian institute of technology, India, department of chemistry,indian institute of technology,banaras hindu university, India
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Authors
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