New short access to pyrrolo[2,3-c]pyridazin-6-ones via β-spirolactams
摘要:
Treatment of 4-aminoalky1-2,6-dichloropyridazines with acid chlorides in the presence of triethylamine leads to the formation of 6-spirolactams (X-ray confirmed) which subsequently can be transformed into pyrrolo[2,3-clpyridazin-6-ones. A putative mechanism based on the Staudinger Ketene-Imine Cycloaddition is proposed. (C) 2014 Elsevier Ltd. All rights reserved.
New short access to pyrrolo[2,3-c]pyridazin-6-ones via β-spirolactams
摘要:
Treatment of 4-aminoalky1-2,6-dichloropyridazines with acid chlorides in the presence of triethylamine leads to the formation of 6-spirolactams (X-ray confirmed) which subsequently can be transformed into pyrrolo[2,3-clpyridazin-6-ones. A putative mechanism based on the Staudinger Ketene-Imine Cycloaddition is proposed. (C) 2014 Elsevier Ltd. All rights reserved.
Treatment of 4-aminoalky1-2,6-dichloropyridazines with acid chlorides in the presence of triethylamine leads to the formation of 6-spirolactams (X-ray confirmed) which subsequently can be transformed into pyrrolo[2,3-clpyridazin-6-ones. A putative mechanism based on the Staudinger Ketene-Imine Cycloaddition is proposed. (C) 2014 Elsevier Ltd. All rights reserved.