Silver‐catalyzed Cycloaddition Reactions

Silver-catalysed [3 + 2] annulation reaction of aryldiazonium salts with allenes enabled by boronate direction

“…As illustrated in Scheme 6b, TS3-1 is more favorable than TS3-1′ by 4.5 kcal mol −1 , owing to the increased steric hindrance in the latter case, which is in line with the excellent regioselectivity observed for 3ba . On the basis of these results and previous studies, 20 a plausible mechanism is outlined in Scheme 6c. Transmetalation of allenylboronate 1 with a silver catalyst provides a propargylic silver species Int-3 .…”

Advances in the synthesis of nitrogen-containing heterocyclic compounds byin situbenzyne cycloaddition

“…Ag + can interact with benzynes to form reactive intermediates that behave like a silver-bound aryl cation or 1,2-carbene-silver carbene (Scheme 28e and f). 16,113–115…”

Catalytic Direct Construction of Cyano-tetrazoles

“…After extensive screening studies (see Tables S1 and S2), we identified that the exclusive formation of 2,5-disubstituted cyano-tetrazoles 2 are achieved by reacting aryl diazonium salt 1 with diazoacetonitrile when adding both silver acetate and sodium acetate (method A in Scheme ). This reaction manifold belongs to the recent blossom of silver-enabled coupling of diazo reagents with aryldiazonium salts from the research groups of Kamenecka, Krasavin, and us . On the other hand, 1,5-disubstituted cyano-tetrazoles can also be obtained as major products when the same set of starting materials were only treated with sodium acetate in acetonitrile (method B in Scheme ).…”