Cascade reactions of captodative formyl(amino)alkenes with N,O-binucleophiles
作者:Alexander Yu. Rulev、Lyudmila I. Larina、Yuri A. Chuvashev、Vladimir V. Novokshonov
DOI:10.1070/mc2005v015n03abeh002101
日期:2005.1
Captodative formyl(amino)alkenes react with N,O-binucleophiles in a cascade fashion to result mainly in dioximes (in the case of hydroxylamine) or oxazoline derivatives (in the case of 2-amino-2-methylpropanole).
Multistep nucleophilic substitution of the halogen atom in 2-halo-2-alkenals
作者:A. Yu. Rulev、S. V. Zinchenko、N. A. Keiko、M. G. Voronkov
DOI:10.1007/bf01433746
日期:1996.1
ipso-Substitution of the halogen atom in 2-halo-2-alkenals under the action of secondary amines proceeds via three consecutive steps: addition, nucleophilic substitution, and beta-elimination (the Ad(N)-S-N-E mechanism). The main intermediates arising in the reactions of 2-chloropropenal and 2-chloro-2-butenal with piperidine were detected by NMR spectroscopy. A general scheme of the reaction is proposed.