Phosphane-Catalyzed [4+2] Annulation of Allenoates with Ketimines: Synthesis of Sultam-Fused Tetrahydropyridines
作者:Xiang-Yu Chen、Song Ye
DOI:10.1002/ejoc.201200747
日期:2012.10
Cyclic ketimines were successfully used as electrophiles in phosphane-catalyzed [4+2] annulation reactions with ethyl 2-methyl-2,3-butadienoate to give the corresponding highly substituted tetrahydropyridine derivatives in moderate to good yields (55–73 %), and with moderate to excellent regioselectivity.
Catalytic [2+2] and [3+2] cycloaddition reactions of allenoates with cyclic ketimines
作者:Xiang-Yu Chen、Ruo-Chen Lin、Song Ye
DOI:10.1039/c2cc16055b
日期:——
Cyclic ketimines as electrophiles for [2+2] and [3+2] cycloaddition reactions of allenoates have been developed, affording functionalized sultam-fused azetidines and dihydropyrroles, respectively, in good yields with high regioselectivities.