Palladium-catalyzed syntheses of naturally-occurring acetylenic thiophens and related compounds
作者:Renzo Rossi、Adriano Carpita、Alessandro Lezzi
DOI:10.1016/s0040-4020(01)96897-8
日期:1984.1
BnEt3N+Cl- as phase transfer agent and 2.5NaqNaOH as base, has been also employed to prepare a large number of heterocyclic acetylene derivatives including some naturally-occurring compounds. The experimetal conditions of Method B allow also the direct production of heterocyclic acetylene derivatives (1) starting from 1-alkynyltrimethylsilanes (5) and organic halides (2).
Gold(I)‐Catalyzed Domino Reaction: An Access to Furooxepines
作者:Roméric Galéa、Gaëlle Blond
DOI:10.1002/adsc.202200019
日期:2022.4.26
bicyclic acetals, also named furooxepines through a gold(I)-catalyzed domino reaction. During this transformation, two molecules of homopropargyl alcohol react together, in a sequence including an intramolecular hydroalkoxylation, condensation, a 1,6-enyne cycloisomerization, acetalization and an isomerization. This gold(I)-catalyzed domino reaction allow the formation of three bonds, two heterocycles