%0 Journal Article %J Bulletin of the Korean Chemical Society %D 2009 %T Alum catalyzed convenient synthesis of quino [2,3-b][1,5]benzoxazepine alpha-aminophosphonate derivatives %A Sonar, Swapnil S. %A Sadaphal, Sandip A. %A Shitole, Nana N. %A Jogdand, Nivrutti R. %A Shingate, Bapurao B. %A Shingare, Murlidhar S. %K 5]benzoxazepine %K alpha-Aminophosphonate %K Alum %K Quino[2.3-b][1 %K Solvent-free %K Triethyl phosphite %X

We have described an efficient synthesis of quino[2,3-b][1,5]benzoxazepine alpha-aminophosphonate derivatives by the nucleophilic addition of triethyl phosphite to substituted quino[2,3-b][1,5]benzoxazepines promoted by easily available, inexpensive and mild catalyst KAl(SO(4))(2)center dot 12H(2)O (alum). The reactions proceed smoothly at room temperature under solvent-free reaction conditions and providing high yield of product in very short reaction time.

%B Bulletin of the Korean Chemical Society %I KOREAN CHEMICAL SOC %C 635-4 YEOGSAM-DONG, KANGNAM-GU, SEOUL 135-703, SOUTH KOREA %V 30 %P 1711-1714 %8 AUG %G eng %N 8 %3 Foreign %4 0.871