Rh(I)-catalyzed intramolecular hydroacylation in ionic liquids
摘要:
Rh(I)-catalyzed hydroacylation of 4-alkenal or 4,6-dienal using ionic liquids (ILs) as reaction media proceeded smoothly, giving cyclopentanone or cycloheptenone derivatives in good yields. It was found that the IL recovered after the reaction, which should contain the Rh(I) catalyst, could be recycled 5-10 times without the loss of catalytic activity and enantioselectivity (in the case of asymmetric hydroacylation). (C) 2007 Elsevier Ltd. All rights reserved.
Rhodium(I)-Catalyzed Intramolecular Hydroacylation of 4,6-Dienals: Novel Synthesis of Cycloheptenones
作者:Yoshihiro Sato、Yoshihiro Oonishi、Miwako Mori
DOI:10.1055/s-2007-983774
日期:2007.7
Rhodium(I)-catalyzedhydroacylation of 4,6-dienals was investigated. Hydroacylation of 4,6-dienals with a substituent at the C7 position produced cycloheptenone derivatives as the major products, while the cyclization of 4,6-dienals with no substituent at the terminus of the diene moiety preferentially gave cyclopentanone derivatives. The olefinic geometry of the diene moiety in 4,6-di-enals also affected