Thermal rearrangement of xanthates to dithiolcarbonates—I
作者:Tanezo Taguchi、Michiko Nakao
DOI:10.1016/s0040-4020(01)92658-4
日期:——
S-methyl xanthates, dl-trans-2-dimethylaminocyclohexyl S-methyl xanthalate was rearranged without elimination to the corresponding dithiolcarbonate while the cis isomer suffered over-all elimination. It has been suggested that the dimethylamino group attached to the carbon carrying the xanthate group induces the rearrangement. Other examples studied support this mechanism. 2-Benzamidoethyl S-methyl and
A Copper‐Catalyzed Interrupted Domino Reaction for the Synthesis of Fused Triazolyl Benzothiadiazine‐1‐oxides
作者:Renè Hommelsheim、Sandra Bausch、Arjuna Selvakumar、Mostafa M. Amer、Khai‐Nghi Truong 、Kari Rissanen、Carsten Bolm
DOI:10.1002/chem.202203729
日期:2023.3
A copper(I)-catalyzed interrupted dominoreaction of 2-azido sulfoximines with 1-iodoalkynes affords fused triazolyl-containing benzothiadiazine-1-oxides in good to excellent yields. The substrate scope is broad and the functional group tolerance high. Mechanistic studies suggest a reaction pathway via copper π-complexes and a consecutive oxidative coupling of a relevant iodinated triazole as intermediate