1.
Chem Commun (Camb)
; (31): 3687-9, 2008 Aug 21.
Article
in English
| MEDLINE
| ID: mdl-18665300
ABSTRACT
Palladium(II) catalyzed carbonylation of 1-ethynyl-1-propargyl acetate is described; in the absence of the bisoxazoline (box) ligand, the second triple bond did not react, affording cyclic orthoesters and . The use of meso-Phbox-Pd(ii) strikingly changed the course of the reaction, yielding bicyclic lactone by tandem carbonylative cyclization as a result of insertion of the second triple bond.