%0 Journal Article %T One-pot synthesis of novel 1H-pyrimido[4,5-c][1,2]diazepines and pyrazolo[3,4-d]pyrimidines %A Prajapati Dipak %A Baruah Partha P %A Gogoi Baikuntha J %A Sandhu Jagir S %J Beilstein Journal of Organic Chemistry %D 2006 %I %R 10.1186/1860-5397-2-5 %X Novel 1H-pyrimido [4,5-c][1,2]diazepines 3 & 4 and pyrazolo [3,4-d]pyrimidines 6 were regioselectively synthesised by the reaction of 1,3-dimethyl-6-hydrazinouracils 1 with various ¦Á,¦Â-unsaturated compounds 2 and ¦Á-ketoalkynes 8 in excellent yields. %U http://bjoc.beilstein-journals.org/content/2/1/5