Palladium(II)-mediated cyclization–carbonylation of 4-yn-1-ones: facile access to 2-cyclopentenone carboxylates
Author/Authors :
Kato، نويسنده , , Keisuke and Yamamoto، نويسنده , , Yasuhiro and Akita، نويسنده , , Hiroyuki، نويسنده ,
Issue Information :
هفته نامه با شماره پیاپی سال 2002
Pages :
3
From page :
4915
To page :
4917
Abstract :
The oxidative cyclization–carbonylation of 4-yn-1-ones 6 in the presence of (CH3CN)2PdCl2/p-benzoquinone in methanol under a carbon monoxide atmosphere (balloon) afforded cyclic-ketals 7 in good to moderate yields. The product 7 were easily converted into 2-cyclopentenone carboxylates 11 and 12.
