Cation exchange resin (hydrogen form) assisted decomposition of 1-aryl-3,3-dialkyltriazenes. A mild and efficient method for the synthesis of aryl iodides
A highly efficient palladium-catalyzed arylation of azoles at the C2-position using 1-aryltriazenes as aryl reagents was developed. Azoles including oxazoles, thiazoles, imidazoles, 1,3,4-oxadiazoles, and oxazolines could react with 1-aryltriazenes smoothly to generate the corresponding products in good to excellent yields, and various substitution patterns were tolerated toward the reaction.
Palladium-catalyzed carbonylative Sonogashira coupling between aryl triazenes and alkynes
作者:Wanfang Li、Xiao-Feng Wu
DOI:10.1039/c5ob00502g
日期:——
We developed a palladium-catalyzed carbonylative Sonogashira reaction with aryl triazenes and alkynes as substrates and methanesulfonic acid as the additive. A series of α,β-ynones were synthesized by this alternative procedure. Notably, bromides, iodides and hydroxyl groups could be well-tolerated under these reaction conditions.
Efficient conversion of 1-aryl-3, 3-dialkyltriazenes to phenols and oxygen-18 labeled phenols
作者:N. Satyamurthy、Jorge R. Barrio、Gerald T. Bida、Michael E. Phelps
DOI:10.1016/s0040-4039(00)97634-2
日期:1990.1
Phenols have been synthesized in excellent yields using a cationexchangeresin (H+ form) assisteddecomposition of 1-aryl-3,3-dialkyltriazanes in the presence of water. This method is also amenable to a high yield and high enrichment synthesis of oxygen-17 and 18 labeled phenols.
Palladium-Catalyzed Direct C2 Arylation of<i>N</i>-Substituted Indoles with 1-Aryltriazenes
作者:Can Liu、Tao Miao、Lei Zhang、Pinhua Li、Yicheng Zhang、Lei Wang
DOI:10.1002/asia.201402274
日期:2014.9
A novel and efficient palladium‐catalyzed C2 arylation of N‐substituted indoles with 1‐aryltriazenes for the synthesis of 2‐arylindoles was developed. In the presence of BF3⋅OEt2 and palladium(II) acetate (Pd(OAc)2), N‐substituted indoles reacted with 1‐aryltriazenes in N,N‐dimethylacetamide (DMAC) to afford the corresponding aryl–indole‐type products in good to excellent yields.