Electrophilic aromatic substitution with N-methoxy-N-acylnitrenium ions generated from N-chloro-N-methoxy amides: syntheses of nitrogen heterocyclic compounds bearing a N-methoxy amide group
作者:Masami Kawase、Takahiro Kitamura、Yasuo Kikugawa
DOI:10.1021/jo00275a027
日期:1989.7
Cyclization with Nitrenium Ions Generated from N-Methoxy- or N-Allyloxy-N-chloroamides with Anhydrous Zinc Acetate. Synthesys of N-Hydroxy- and N-Methoxynitrogen Heterocyclic Compounds
Electrophilic intramolecular aromatic substitution with an N-methoxy- or an N-allyloxy-acylnitrenium ion, generated by treatment of an N-methoxy- or an N-allyloxy-N-chloroamide with anhydrous zinc acetate in nitromethane, leads to formation of a nitrogen heterocyclic compound bearing an N-methoxy- or N-allyloxy group. The latter is readily converted to the corresponding N-hydroxy compound by palladium-catalyzed removal of the allyl group.
Electrophilic aromatic substitution with a nitrenium ion generated from N-chloro-N-methoxyamides. Application to the synthesis of 1-methoxy-2-oxindoles
作者:Yasuo Kikugawa、Masami Kawase
DOI:10.1021/ja00331a053
日期:1984.9
Kikugawa Yasuo, Shimada Masahiro, Matsumoto Kazuhiro, Heterocycles, 37 (1994) N 1, S 293-301