Acid-catalyzed intramolecular oxa-Michael addition reactions under solvent-free and microwave irradiation conditions
نویسندگان
چکیده
منابع مشابه
Synthesis of Metallophthalocyanines Under Solvent Free Conditions Using Microwave Irradiation
Phthalocyanine complexes of Cu, Co, Ni, Fe, Zn, Pd, Pt and Ru have been synthesized from reaction between phthalonitrile and proper metal salts upon exposure to microwave irradiation under solvent-free conditions and considerably reduced reaction times.
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An efficient cyclization of 2’-hydroxychalcone to flavanone using calcium chloride as a catalyst was developed. The scope of the reaction was studied with substituted 2’-hydroxychalcone and these chalcones was converted into corresponding flavanone in good yield. The merits of this method are inexpensive and easily available catalyst, easy workup procedure, avoid use of toxic solvent
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An efficient cyclization of 2’-hydroxychalcone to flavanone using calcium chloride as a catalyst was developed. The scope of the reaction was studied with substituted 2’-hydroxychalcone and these chalcones was converted into corresponding flavanone in good yield. The merits of this method are inexpensive and easily available catalyst, easy workup procedure, avoid use of toxic solvent.
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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...
متن کاملsynthesis of metallophthalocyanines under solvent free conditions using microwave irradiation
phthalocyanine complexes of cu, co, ni, fe, zn, pd, pt and ru have been synthesized from reaction between phthalonitrile and proper metal salts upon exposure to microwave irradiation under solvent-free conditions and considerably reduced reaction times.
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ژورنال
عنوان ژورنال: Arkivoc
سال: 2010
ISSN: 1551-7012
DOI: 10.3998/ark.5550190.0010.e14