Gold- and Silver-Mediated Cycloisomerizations of N-Propargylamides
摘要:
Substituted N-propargylamides have proven to be valuable substrates for alkyne-activated cycloisomerization reactions. N-Tosyl-N'-propargylurea underwent reaction with AuCl3 to give the corresponding dihydroimidazolone, while N-propargyl-3-oxobutanamides and esters were used to construct furanyl fused pyrrolldinones and dihydrofuranones via Ag(I)-mediated alkyne activation.
5-Exo-dig aminocylization/hydroxyfluorination of propargylic carbamates
作者:Antonio Arcadi、Marco Chiarini、Luana Del Vecchio、Fabio Marinelli
DOI:10.1016/j.jfluchem.2018.04.002
日期:2018.7
The reaction was effectively promoted by NaHCO3 and/or silver catalysis. The peculiar behavior of propargylic carbamates bearing a chiral steroidal moiety is described. Extensions and limitations of the procedure with respect to urea derivatives, homopropargyl compounds, internal alkynes and one-pottransformations of propargylic alcohols with isocyanates are reported.