Functionalization by metalation of the benzene moiety of benzodiazines. Determination of structures by long-range 1H-15N correlation at natural abundance. Diazines XXV
作者:V.Gautheron Chapoulaud、I. Salliot、N. Plé、A. Turck、G. Quéguiner
DOI:10.1016/s0040-4020(99)00202-1
日期:1999.4
The first lithiation of the benzene moiety of various quinazolinones, quinoxalines, and phthalazines has been performed. The effects of kind and positions of various directing groups towards the regioselectivity of the metalation have been studied. Unambiguous structure determinations of quinoxaline derivatives have been carried out by applying NMR GHMBC H-1-N-15 sequence. (C) 1999 Elsevier Science Ltd. All rights reserved.