Intramolecular Pauson–Khandreaction of various alkynyl exo-alkylidene-cyclohexanes and -pentane gives angular type 6–5–5 and 5–5–5 tricyclic compounds in good to high yield. The present reaction also offers convenient construction of two contiguous quaternary centers, which could not be synthesized from alkynyl endo-cycloolefins. Scope and limitation of the present reaction of various exo- and endo-cyclic
The acylation of acetylenes with β, γ-unsaturated acid chlorides: a new sysnthesis of 5,5-disubstituted 2-cyclopentenones
作者:Martin Karpf
DOI:10.1016/s0040-4039(00)85748-2
日期:1982.1
The acylation of acetylenes with α,α-disubstituted, β,γ-unsaturated acid chlorides was found to lead to 5,5-disubstituted 2-cyclopentenones bya novel intramolecular cyclization-rearrangement process.