Synthesis and the keto-enol equilibrium of 2-acyl lactams
作者:V. G. Nenajdenko、A. M. Gololobov、E. P. Zakurdaev、E. S. Balenkova
DOI:10.1023/b:rucb.0000012373.06094.ff
日期:2003.11
Condensation of N-substituted lactams with carboxylic acid esters was studied. A wide range of substituted 2-acyl lactams with different ring sizes were synthesized. The structure of 2-acyl lactams (primarily, the ring size) was found to influence the keto-enol tautomerism.
Convenient synthesis of melatonin analogues: 2- and 3-substituted -N-acetylindolylalkylamines
作者:Valentine G. Nenajdenko、Eugene P. Zakurdaev、Eugene V. Prusov、Elizabeth S. Balenkova
DOI:10.1016/j.tet.2004.10.006
日期:2004.12
A new method for the synthesis of 2- and 3-substituted indolylalkylamides, derivatives of melatonin, from arylhydrazines and amidoketones by the Fischer reaction was elaborated. The amidoketones can be easily prepared from cyclic imines by reaction with acylpyridinium chloride. This method is a one-step synchronous creation of the selected alkylamide fragment and the indole core. Variation of the arylhydrazines