Cycloaddition reactions of 3-aryl-5-phenyl-5H,7H-thiazolo[3,4-c]oxazol-4-ium-1-olates
作者:Teresa M.V.D Pinho e Melo、Clara S.B Gomes、António M.d'A Rocha Gonsalves、José A Paixão、Ana M Beja、Manuela Ramos Silva、Luiz Alte da Veiga
DOI:10.1016/s0040-4020(02)00463-5
日期:2002.6
Intermolecular 1,3-dipolar cycloaddition of (5R)- and (5S)-3,5-diphenyl-5H,7H-thiazolo[3,4-c]oxazol-4-ium-1-olates, (5R)- and (5S)-3-(p-methoxyphenyl)-5-phenyl-5H,7H-thiazolo-[3,4-c]oxazol-4-ium-1-olates with a range of dipolarophiles is described. New chiral 5-aryl-3-phenyl-1H,3H-pyrrolo[1,2-c]thiazoles with R and S configuration were obtained. The structure of methyl (3R)-3-phenyl-5-(p-methoxyphenyl)-1H
(5 R)-和(5 S)-3,5-二苯基-5 H,7 H-噻唑并[3,4- c ]恶唑-4-鎓-1-油酸酯的分子间1,3-偶极环加成,( 5 R)-和(5 S)-3-(对甲氧基苯基)-5-苯基-5 H,7 H-噻唑-[3,4- c ]恶唑-4-鎓-1-油酸酯,范围为描述了双亲性。获得了具有R和S构型的新的手性5-芳基-3-苯基-1 H,3 H-吡咯并[1,2- c ]噻唑。甲基(3 R)-3-苯基-5-(p的结构通过X射线晶体学测定-(甲氧基苯基)-1 H,3 H-吡咯并[1,2 - c ]噻唑-6-羧酸酯。还实现了7,7a-二氢-1 H,3 H-吡咯并[1,2 - c ]噻唑-6,7-二羧酸酯的合成。