172217-13-9Relevant academic research and scientific papers
Fischer indolization of ethyl pyruvate 2-bis(2-methoxyphenyl)hydrazone and new insight into the mechanism of Fischer indolization. (Fischer indolization and its related compounds. XXVII)
Murakami,Watanabe,Otsuka,Iwata,Yamada,Yokoyama
, p. 1287 - 1293 (1995)
In connection with studies on the direction of cyclization in the Fischer indolization of substituted diphenylhydrazones, the Fischer indolization of ethyl pyruvate 2-bis(2-methoxyphenyl)hydrazone (6) was carried out. The result showed that cyclization in Fischer indolization of diphenylhydrazone does not always proceed to the electron-richer nucleus, but depends on the conformation of the enehydrazine. Thus, the Fischer indolization should proceed via a [3,3] sigmatropic route, with an electronic effect.
