89524-37-8Relevant articles and documents
Mesoporous aluminosilicate-catalyzed Mukaiyama aldol reaction of aldehydes and acetals
Ito, Suguru,Tanuma, Kenji,Matsuda, Kohei,Hayashi, Akira,Komai, Hirotomo,Kubota, Yoshihiro,Asami, Masatoshi
, p. 8498 - 8504 (2014/12/11)
A mesoporous aluminosilicate (Al-MCM-41) was found to be an effective heterogeneous catalyst for the reaction of both aldehydes and acetals with silyl enol ethers or ketene silyl acetals to give the corresponding aldol adducts in moderate to high yields. The remarkable high catalytic activity of Al-MCM-41 over amorphous silica-alumina and aluminum-free mesoporous silicate was observed in the reaction. The solid acid catalyst could be recovered easily by filtration and the recovered catalyst was reusable in the same reactions without a significant loss of catalytic activity.
Acid catalyzed rearrangement of vinyl and ketene acetals
Maziarz, Elzbieta,Furman, Bart?omiej
, p. 1651 - 1658 (2014/02/14)
Substituted vinyl and ketene acetals undergo smooth oxygen-to-carbon rearrangement with a catalytic amount of TMSOTf to afford chain-extended ketones or esters, respectively. The developed procedure has been applied to the stereoselective synthesis of C-glycosides from the corresponding anomeric vinyl ethers.
An alternative approach to direct aldol reaction based on gold-catalyzed methoxyl transfer
Zhang, Moran,Wang, Yunxia,Yang, Yang,Hu, Xiangdong
experimental part, p. 981 - 985 (2012/06/30)
A mild and catalyzed alternative to the direct aldol reaction has been developed based on the gold-catalyzed methoxy group transfer from dimethyl acetals to terminal alkynes. Due to the simultaneous activation of the acetals, this aldol approach is only functional for acetals but not aldehydes. A ligand effect from the gold complex has also been observed. Copyright
