http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Zeinali-Dastmalbaf, Mohsen,Davoodnia, Abolghasem,Heravi, Majid M.,Tavakoli-Hoseini, Niloofar,Khojastehnezhad, Amir,Zamani, Hassan Ali Korean Chemical Society 2011 Bulletin of the Korean Chemical Society Vol.32 No.2
A green and efficient method for the synthesis of 3,4-dihydropyrimidin-2(1H)-ones and -thiones through one-pot three-component reaction of ethyl acetoacetate, an aryl aldehyde, and urea or thiourea in acetonitrile using silica gel-supported polyphosphoric acid (PPA-$SiO_2$) as catalyst is described. Compared to the classical Biginelli reaction conditions, the present methodology offers several advantages such as high yields, relatively short reaction times, mild reaction condition and a recyclable catalyst with a very easy work up.
Mohsen Zeinali-Dastmalbaf,Abolghasem Davoodnia,Niloofar Tavakoli-Hoseini,Amir Khojastehnezhad,Majid M. Heravi,Hassan Ali Zamani 대한화학회 2011 Bulletin of the Korean Chemical Society Vol.32 No.2
A green and efficient method for the synthesis of 3,4-dihydropyrimidin-2(1H)-ones and -thiones through one-pot three-component reaction of ethyl acetoacetate, an aryl aldehyde, and urea or thiourea in acetonitrile using silica gel-supported polyphosphoric acid (PPA-SiO_2) as catalyst is described. Compared to the classical Biginelli reaction conditions, the present methodology offers several advantages such as high yields, relatively short reaction times, mild reaction condition and a recyclable catalyst with a very easy work up.