Rhodium Thiavinyl Carbenes from 1,2,3-Thiadiazoles Enable Modular Synthesis of Multisubstituted Thiophenes
作者:Daria Kurandina、Vladimir Gevorgyan
DOI:10.1021/acs.orglett.6b00541
日期:2016.4.15
The rhodium-catalyzed transannulation reaction between 1,2,3-thiadiazoles and alkynes, proceeding via intermediacy of the previously unknown Rh thiavinyl carbene, toward a highly efficient and regioselective synthesis of up to fully substituted thiophenes is described.
Regioselectivity for the Rh(I)‐catalyzed Annulation of 1,2,3‐Thiadiazoles with Alkynes: Experimental and Computational Analysis Reveal the Surprising Role of the Alkyne Substituent
作者:Tasiana Reza、Marina A. Tokareva、Natalie K. Dobson、Alexandra L. Shanahan、Kyle Sheather、Christopher Richardson、Sinead T. Keaveney
DOI:10.1002/cctc.202301117
日期:2023.12.19
For the Rh(I)-catalyzed denitrogenative transannulation of 1,2,3-thiadiazoles with alkynes, the effect of the coupling partner (alkyne, alkene or nitrile), 1,2,3-thiadiazole substituent and ligand on regioselectivity has been previously reported. However, the role of the alkyne substituent has not been examined. This work reports systematic computational and experimental studies addressing how the