HARAYAMA TAKASHI; TEZUKA YASUHIRO; TAGA TOORU; YONEDA FUMIO, J. CHEM. SOC. PERKIN TRANS,(1987) N 1, 75-83
作者:HARAYAMA TAKASHI、 TEZUKA YASUHIRO、 TAGA TOORU、 YONEDA FUMIO
DOI:——
日期:——
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.
Hydrolysis of flavin (I) with Triton B gave the 4a-spirohydantoin (II) as the main product along with III, showing that a main nucleophilic attack of hydroxide ion was initiated on the 10a position of I.