Heterocyclization of 2-acyl-3-indolylacetic acids using hydrazine. Synthesis of 2,3-dihydro-2-oxo-5-R1-1H-[1,2]diazepino[4,5-b]indoles
作者:V. S. Tolkunov、A. B. Eresko、A. I. Khizhan、O. V. Shishkin、G. V. Palamarchuk、S. V. Tolkunov
DOI:10.1007/s10593-009-0322-7
日期:2009.6
of 2-acetyl-3-indolylacetic acid hydrazones and its amides, in contrast to similar derivatives of phenylacetic acid, does not lead to 2,3-dihydro-2-oxo-5-R1-1H-[1,2]diazepino-[4,5-b]indoles but rather to 2-aminoindolo[2,3-c]pyridin-3(2H)-one or azines of 2-acetyl-3-indolyl-acetic acid. 2,3-Dihydro-2-oxo-5-R1-1H-[1,2]diazepino[4,5-b]indoles were obtained by the reaction of 1-alkylaminoacetylindolo[2
与类似的苯乙酸衍生物相比,2-乙酰基-3-吲哚基乳酸hydr及其酰胺的杂环化不会导致2,3-二氢-2-氧代-5-R 1 -1H- [1,2 ]二氮杂-[4,5-b]吲哚,而是2-氨基吲哚[2,3- c ]吡啶-3(2H)-一或2-乙酰基-3-吲哚基-乙酸的嗪。通过1-烷基氨基乙酰基吲哚并[2,3- c ]吡咯鎓高氯酸盐与2,3-二氢-2-氧代-5-R 1 -1H- [1,2]二氮杂并[4,5- b ]吲哚的反应得到2-乙酰基-和2-丙酰基-3-吲哚基乳酸的甲酯与水合肼的混合物。