SELENALZOLE DERIVATIVE HAVING LIGAND WHICH ACTIVATES PEROXISOME PROLIFERATOR ACTIVATED RECEPTOR (PPAR), PREPARING METHOD THEREOF AND USAGE OF THE CHEMICAL COMPOUNDS
A divergent and metal free synthesis of sulfoximine tethered imidazoles, imidazopyridines, imidazothiazoles, imidazobenzothiazines, thiazoles and selenazoles
作者:S. R. K. Battula、V. P. Rama Kishore Putta、G. V. Subbareddy、I. E. Chakravarthy、V. Saravanan
DOI:10.1039/c7ob00601b
日期:——
A divergent and metal free approach has been successfully developed for the synthesis of sulfoximine tethered heterocycles. A key α-bromoalkanone intermediate 3b has been reported for the first time. Various sulfoximine tethered imidazoles, imidazopyridines, thiozoloimidazoles, imidazobenzothiazines, thiazoles and selenazoles are made from this common sulfoximine building block.
The facile and efficient organocatalytic platform for accessing 1,2,4-selenadiazoles and thiadiazoles under aerobic conditions
作者:V.P. Rama Kishore Putta、Raghuram Gujjarappa、Nagaraju Vodnala、Richa Gupta、Prasad P. Pujar、Chandi C. Malakar
DOI:10.1016/j.tetlet.2018.01.063
日期:2018.3
The first organocatalytic approach towards synthesis of rarely explored 1,2,4-selenadiazole and thiadiazole scaffolds have been devised using corresponding carboxamides as substrates. The transformations were realized using two distinct conditions in the presence of catalytic vitamin B3 or thiourea underaerobicconditions. Developed methods overcome the associated limitations of previous reported