Unexpected reactions of 1,4-diaza-1,3-dienes under acylating conditions. A new cyclization to non-acylated imidazole derivatives
作者:Diego Armesto、Paula Bosch、William M. Horspool、Maria J. Ortiz
DOI:10.1016/s0040-4039(00)96577-8
日期:1987.1
The reaction of anions from 1,2-bisimines with acid chlorides gives unacylated 2H-imidazoles. The unprecedented reactivity of these anions is interpreted by cyclization of the radical generated by electron transfer from the anion to the acid chloride.
KATRITZKY, A. R.;BORJA, S. B.;MARQUET, J.;SAMMES, M. P., J. CHEM. SOC. PERKIN TRANS., 1983, N 9, 2065-2069
作者:KATRITZKY, A. R.、BORJA, S. B.、MARQUET, J.、SAMMES, M. P.
DOI:——
日期:——
A sequential one-pot approach to 1,2,4,5-tetrasubstituted-2H-imidazole synthesis from disubstituted alkynes
作者:Siva Senthil Kumar Boominathan、Chung-Yu Chen、Po-Jui Huang、Ruei-Jhih Hou、Jeh-Jeng Wang
DOI:10.1039/c5nj00959f
日期:——
A sequential one-pot approach to the tetrasubstituted 2H-imidazole scaffolds has been developed from disubstitutedalkynes and structurally diverse ketones. The reaction proceeds via a diketo intermediate generated from internal alkynes followed by the addition of ammonium acetate and a suitable ketone, affording a diverse range of 2H-imidazoles. Using air-moisture stable reaction conditions and inexpensive