SYNTHESIS AND CYCLIZATION OF PHOSPHORYLATED β-ALLENIC AMINES

Abstract
Phosphorylated β-allenic amines were obtained by aminophosphorylation of β-allenic aldehydes and ketones. When treated by silver tetrafluoroborate in methylene chloride, they generated phosphorylated nitrogen cycles such as 1-pyrrolines and 1,2,3,6-tetrahydropyridines, with dephosphorylation of the latter tetrahydropyridines producing 3,6-dihydropyridines.