A New and Improved<b><i>N</i></b>-3 Alkylation of 10-Substituted Isoalloxazines Using 1,8-Diazabicyclo[5.4.0]undec-7-ene in Benzene
作者:Geetanjali、Ram Singh、S. M. S. Chauhan
DOI:10.1081/scc-120015816
日期:2003.1.4
Abstract 1,8-Diazabicyclo[5.4.0]undec-7-ene (DBU) has been identified as a remarkablebase for the alkylation at N-3 position of 10-substituted isoalloxazines with alkyl halides in dry benzene.
Microwave-Assisted Synthesis of 10-Substituted Isoalloxazines in the Presence of Solid Acids
作者:S. M. S. Chauhan、Ram Singh、Geetanjali
DOI:10.1081/scc-120017194
日期:2003.1.5
Abstract The microwave-enhanced synthesis of 10-substituted isoalloxazines is achieved rapidly (˜4 min) and in good yield (>80–95%) via the cyclocondensation of 2-substituted aminoanilines with alloxan or N-methylalloxan monohydrate in the presence of acidic alumina or montmorillonite clays (KSF and K10).