2008

Ring closure reactionsO 0130 Gold-Catalyzed Allyl—Allyl Coupling. — Cationic Au(I) complexes are shown to

be the most efficient catalysts for the intramolecular coupling of allyl acetates with allyl stannanes. A variety of five- and six-membered rings is prepared; in some cases destan-nylated by-products such as (X) are isolated. — (PORCEL, S.; LOPEZ-CARRILLO, V.; GARCIA-YEBRA, C.; ECHAVARREN*, A. M.; Angew. Chem., Int. Ed. 47 (2008) 10, 1883-1886; Inst. Chem. Res. Catalonia, E-43007 Tarragona, Spain; Eng.) — Kieslich

26- 034

2008