1-Protectod and 1,2-diprotected derivatives of 4-bromoimidazole-5-carbaldehyde were prepared from imidazole via 2,4,5-tribiomoimidazole and reacted with ethyl 2-mercaptoethanoate to give the title Compounds.
Iddon, Brian; Khan, Nazir; Lim, Bee Lan, Journal of the Chemical Society. Perkin transactions I, 1987, p. 1457 - 1464
作者:Iddon, Brian、Khan, Nazir、Lim, Bee Lan
DOI:——
日期:——
Azoles. Part II. Synthesis of imidazole-2(and -5)-carbaldehydes and derivatives of imidazo[1,2-b]isoquinoline; transmetallation of imidazol-5-yllithium compounds
作者:Brian Iddon、Anders K. Petersen、Jan Becher、Nils J. Christensen
DOI:10.1039/p19950001475
日期:——
The transmetallations of 1-protected 4-bromoimidazol-5-yllithium derivatives have been studied using DMF as the quenching reagent. 4-Bromoimidazole-2-carbaldehydes are usually the major products and not the -5-carbaldehydes as reported previously. Various attempts to prevent or inhibit these transmetallations are described. Cyclisation of 4-bromo(and 4,5-dibromo)-1-(3,4-dimethoxybenzyl)imidazole-2-carbaldehyde and 1-(3,4-dimethoxybenzyl)benzimidazole-2-carbaldehyde in TFA gave the corresponding imidazo- or benzimidazo-[1,2-b]isoquinoline.
Iddon, Brian; Khan, Nazir, Journal of the Chemical Society. Perkin transactions I, 1987, p. 1445 - 1452
作者:Iddon, Brian、Khan, Nazir
DOI:——
日期:——
Iddon Brian, Petersen Anders K., Becher Jan, Christensen Nils J., J. Chem. Soc. Perkin Trans. 1, (1995) N 12, S 1475-1481
作者:Iddon Brian, Petersen Anders K., Becher Jan, Christensen Nils J.