Pyrazole synthesis under microwave irradiation and solvent-free conditions
نویسندگان
چکیده
منابع مشابه
Pyrazole Synthesis under Microwave Irradiation and Solvent-free Conditions
Este trabalho descreve a síntese de 4,5-diidro-1H-pirazóis pela reação de ciclocondensação de hidrazinas [NH 2 NH-R, onde R = CO 2 Me, Ph, CH 2 CH 2 OH] com 4-alcóxi-1,1,1-trifluor-3-alquen2-onas [CF 3 C(O)CH=C(R)OR, onde R/R = Et/H, Me/Me and Me/Ph] sob irradiação de microondas utilizando um equipamento de micro-ondas para síntese e em condição livre de solvente. Algumas reações foram realizad...
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A simple, fast, efficient and environmentally friendly method for synthesis of benzimidazole and its 2-alkyl, aryl and heteroaryl substituted derivatives was developed using zeolite HY. Two component cyclolcondensation of 1,2-phenylenediamine (o-phenylenediamine) and commercially available carboxylic acids catalyzed by zeolite HY without any solvent, under microwave irradiation led to formation...
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ژورنال
عنوان ژورنال: Journal of the Brazilian Chemical Society
سال: 2010
ISSN: 0103-5053
DOI: 10.1590/s0103-50532010000600012