A metal- and base-free domino protocol for the synthesis of 1,3-benzoselenazines, 1,3-benzothiazines and related scaffolds
作者:V. P. Rama Kishore Putta、Raghuram Gujjarappa、Ujjawal Tyagi、Prasad P. Pujar、Chandi C. Malakar
DOI:10.1039/c8ob03058h
日期:——
Efficient and operationally simple protocols have been demonstrated for the synthesis of the title compounds using easily available starting materials under mild conditions, giving a broad range of rarely reported molecules in excellent yields.
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