Synthesis of 6-Amino-4-aryl-3-methyl-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitriles in the Presence of Reusable Catalyst "Celloluse"
نویسندگان
1 دانشگاه آزاد اسلامی
2 دانشگاه آزاد اسلامی واحد علوم و تحقیقات
3 دانشگاه ارومیه
4 دانشگاه علوم پزشکی اصفهان
doi
10.22036/org.chem..2016.13581چکیده
Cellulose was applied as a reusable and green catalyst for the facile four-component synthesis of 6-amino-4-aryl-3-methyl-1,4-dihydropyrano[2,3- c ]pyrazole-5-carbonitrile derivatives using hydrazine monohydrate, ethyl acetoacetate, malononitrile and aryl aldehydes, under solvent-free and thermal conditions. The use of non-toxic and inexpensive catalyst, short reaction time, clean work-up and good yields of the products are advantages of this method.
