Pd/PTABS: Low-Temperature Thioetherification of Chloro(hetero)arenes
作者:Siva Sankar Murthy Bandaru、Shatrughn Bhilare、Jesvita Cardozo、Nicolas Chrysochos、Carola Schulzke、Yogesh S. Sanghvi、Krishna Chaitanya Gunturu、Anant R. Kapdi
DOI:10.1021/acs.joc.9b00840
日期:2019.7.19
Heteroarenes of commercial relevance such as purines and pyrimidines were also found to be useful substrates for the reported transformation. The commercial drug Imuran (azathioprine) was synthesized as an example, and its preparation could be optimized. DFT studies were performed to understand the electronic effects of the tested ligands on the catalytic reaction.
Photoinduced Cyclizations of <i>o</i>-Diisocyanoarenes with Organic Diselenides and Thiols that Afford Chalcogenated Quinoxalines
作者:Cong Chi Tran、Shin-ichi Kawaguchi、Fumiya Sato、Akihiro Nomoto、Akiya Ogawa
DOI:10.1021/acs.joc.0c00647
日期:2020.6.5
via the photoinduced cyclizations of o-diisocyanoarenes with diaryl or dialkyl diselenides, in addition to providing a detailed discussion of the corresponding mechanism and revealing that the developed procedure can also be applied to prepare 2-thiolated quinoxaline derivatives from o-diisocyanoarenes and thiols. The developed technique does not need the use of additives or metal catalysts and features