Synthesis of different types of valerolactams starting from 2,5-dihydrooxazoles
摘要:
Tricyclic valerolactams characterized by a variable heteroatom in gamma-position, for example, sulfur, oxygen or nitrogen, were synthesized starting from 2,5-dihydrooxazoles. The chosen synthetic procedures included the addition of thiosalicylic acid as well as the addition of salicyl chloride. The nitrogen containing lactams were prepared in a cycloaddition and subsequent oxidation. (C) 2009 Elsevier Ltd. All rights reserved.
A new synthetic pathway to generate β-oxabutyrolactams starting from 2,5-dihydrooxazoles is described. This procedure is based on the addition of acid chlorides to heterocyclic imines followed by oxidation in the presence of pyridinium chlorochromate.
Weber, Maya; Jakob, Juergen; Martens, Juergen, Liebigs Annalen der Chemie, 1992, # 1, p. 1 - 6
作者:Weber, Maya、Jakob, Juergen、Martens, Juergen
DOI:——
日期:——
Synthesis of different types of valerolactams starting from 2,5-dihydrooxazoles
作者:Katharina Johannes、Jürgen Martens
DOI:10.1016/j.tet.2009.10.107
日期:2010.1
Tricyclic valerolactams characterized by a variable heteroatom in gamma-position, for example, sulfur, oxygen or nitrogen, were synthesized starting from 2,5-dihydrooxazoles. The chosen synthetic procedures included the addition of thiosalicylic acid as well as the addition of salicyl chloride. The nitrogen containing lactams were prepared in a cycloaddition and subsequent oxidation. (C) 2009 Elsevier Ltd. All rights reserved.