Synthesis and ring—Chain tautomerism of angularly substituted cycloalkane-fused tetrahydro-1,3-oxazines
作者:Zsolt Szakonyi、Ferenc Fülöp、Gábor Bernáth、Ferenc Evanics、Frank G. Riddell
DOI:10.1016/s0040-4020(97)10355-6
日期:1998.1
Starting from 1-methyl-1-cyclopentene and -cyclohexene, regioisomeric 1,3-amino alcohols 6a,b and 7a,b were prepared by regio- and stereospecific reactions. When the amino alcohols were condensed with aromatic aldehydes, well-defined products 8–11 were obtained, which exist as three-component tautomeric mixtures in CDCl3 solution. When equation (1) was applied in all four sets 8–11, good linear correlations