Efficient Nucleophilic Substitution of α-Aryl Alcohols with 1,3-Dicarbonyl Compounds Catalyzed by Tin Ion-Exchanged Montmorillonite
作者:Makoto Onaka、Jiacheng Wang、Yoichi Masui
DOI:10.1055/s-0030-1258567
日期:2010.10
Tin ion-exchanged montmorillonite demonstrated the high catalytic activity for the direct nucleophilic substitution of a hydroxyl group in α-aryl alcohols with various 1,3-dicarbonyl compounds including less acidic 1,3-diesters in crude solvents to afford the benzylated products accompanied by water.
Palladium-catalyzed Nucleophilic Substitution of Diarylmethyl Carbonates with Malonate Carbanions
作者:Ryoichi Kuwano、Hiroki Kusano
DOI:10.1246/cl.2007.528
日期:2007.4.5
The nucleophilic substitution of diarylmethyl carbonates with malonate carbanions proceeded in the presence of [Pd(π-C3H5)(cod)]BF4–Cy-Xantphos, giving the desired (diarylmethyl)malonates in up to ...
Fe-Catalyzed Double Cross-Dehydrogenative Coupling of 1,3-Dicarbonyl Compounds and Arylmethanes
作者:Kai Yang、Qiuling Song
DOI:10.1021/ol503556x
日期:2015.2.6
tandem cross-dehydrogenativecoupling of the methyl group in arylmethanes with 1,3-dicarbonyl compounds has been developed. The reaction affords one new C(sp3)–C(sp2) bond and one new C(sp3)–C(sp3) bond in a one-pot protocol. Further study suggests that this reaction might start with a Friedel–Crafts-type reaction (cross-dehydrogenative arylation) followed by cross-dehydrogenativecoupling with an