Oszczapowicz, Janusz; Raczynska, Ewa, Polish Journal of Chemistry, 1983, vol. 57, # 4/5/6, p. 419 - 428
作者:Oszczapowicz, Janusz、Raczynska, Ewa
DOI:——
日期:——
Novel synthesis of 1-substituted-4-imidazolecarboxylates via solvent-free cycloaddition reaction between formamidines and isocyanides
作者:Han Cao、Fu-sheng Bie、Xue-jing Liu、Ying Han、Jie Ma、Yi-jun Shi、Peng Yan、Chao-yue Sun、Hai-meng Wang
DOI:10.1016/j.tet.2020.131205
日期:2020.5
A simple and efficient protocol for cyclization between formamidines and ethyl isocyanoacetate has been described in the absence of metal catalyst and solvent. A series of 1-substituted-4-imidazolecarboxylates were synthesized in moderate to good yields with DABCO as base additive.