Synthesis of heterocyclic ketene N,O‐Acetals and their reactions with α,β‐unsaturated esters
1989; Wiley; Volume: 122; Issue: 10 Linguagem: Inglês
10.1002/cber.19891221029
ISSN0009-2940
AutoresZhi‐Tang Huang, Pingcheng Zhang,
Tópico(s)Synthesis and Characterization of Heterocyclic Compounds
ResumoAbstract Ketene dithioacetals 2 react with 2‐aminoethanol or 1‐amino‐2‐propanol to afford the corresponding substituted 2‐methyleneoxazolidines 3 and 4 . In some cases, 3 and 4 react with α,β‐unsaturated esters to give 5 H ‐oxazolo[3,2‐ a ]pyridine derivatives 5 by an electrophilic addition and cyclocondensation sequence.
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