Eco-friendly syntheses of 2,2-disubstituted- and 2-spiroquinazolinones
作者:Ferenc Miklós、Veronika Hum、Ferenc Fülöp
DOI:10.3998/ark.5550190.p008.717
日期:——
Environmentally friendly methods were applied to prepare quinazolin-4(1H)-one derivatives in either aqueous or solventless medium from anthranilamide and a number of ketones. With dialkyl-substituted ketones, acetophenone and cycloalkanones, the ring closure proceeded smoothly under either aqueous or solventless conditions. With poorly water-soluble cycloalkanones, the ring closure was carried out
Click Reaction: Highly Efficient Synthesis of 2,3-Dihydroquinazolin-4(1<i>H</i>)-ones
作者:Ahmad Shaabani、Ali Maleki、Hamid Mofakham
DOI:10.1080/00397910802213802
日期:2008.10.22
In this work, condensation reaction of 2-aminobenzamide with various alkyl, aryl, and alicyclic aldehydes or ketones to 2,3-dihydroquinazolin-4(1H)-one derivatives in the presence of a catalytic amount of ammonium chloride in ethanol at room temperature is described. This reaction can be classified as a click chemical synthesis because of its high yields, short reaction times, and green and efficient reaction medium.