A catalytic enantioselective reaction using a C2-symmetric disulfonamide as a chiral ligand: cyclopropanation of allylic alcohols by the Et2Zn-CH2I2-disulf...

The first catalytic, enantioselective Simmons-Smith cyclopropanation of an allylic alochol has been achieved by the reaction of an allylic alcohol with Et2...

Hideyo，Takahashi，and，... - 《Tetrahedron Letters》

A catalytic enantioselective reaction using a C2-symmetric disulfonamide as a chiral ligand: Alkylation of aldehydes catalyzed by disulfonamide-Ti(O-i-Pr)4...

Excellent enantioselective alkylation of aldehydes with dialkylzinc has been developed. This methodology is based on the concept of modifying the Lewis aci...

Hideyo，Takahashi，and，... - 《Tetrahedron》

ChemInform Abstract: Lanthanoid Triflates as Water-Tolerant Lewis Acids. Activation of Commercial Formaldehyde Solution and Use in the Aldol Reaction of Si...

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a Chem...

S.，KOBAYASHI，I.，... - 《Cheminform》

Lanthanide trifluoromethanesulfonates as reusable catalysts: catalytic Friedel-Crafts acylation

The Friedel-Crafts acylation of substituted benzenes proceeds smoothly by using a catalytic amount of a lanthanide trifluoromethanesulfonate [Ln(OTf)_3...

Atsushi，Kawada，Shuichi，... - 《Journal of the Chemical Society》

Lanthanide trifluoromethanesulfonates as reusable catalysts. Michael and Diels-Alder reactions

The Michael reaction of silyl enolates with α,β-unsaturated ketones and the Diels-Alder reaction of carbonyl containing dienophiles are catalyzed by a ca...

S Kobayashi，I Hachiya，T Takahori，... - 《Tetrahedron Letters》

Lanthanide Trifluoromethanesulfonates as Reusable Catalysts: Aldol Reactions in Organic Solvents

The aldol reaction of silyl enolates with aldehydes or acetals using a lanthanide trifluoromethanesulfonate as catalyst smoothly proceed in organic solvent...

S Kobayashi，I Hachiya，T Takahori - 《Synthesis》

Lanthanide Trifluoromethanesulfonates as Stable Lewis Acids in Aqueous Media. Yb(OTf)3 Catalyzed Hydroxymethylation Reaction of Silyl Enol Ethers with Commercial Formaldehyde Solution.

Silyl enol ethers smoothly react with commercial formaldehyde solution to give the corresponding hydroxymethylated adducts in high yields by the promotion of a catalytic amount of ytterbium(III) triflate (Yb(OTf)3), which is a stable Lew...

Kobayashi，Shu - 《Chemistry Letters》

Lanthanide Triflates as Water-Tolerant Lewis Acids. Activation of Commercial Formaldehyde Solution and Use in the Aldol Reaction of Silyl Enol Ethers with ...

Silyl enol ethers smoothly react with commercial formaldehyde solution to give the corresponding hydroxymethylated adducts in high yields by the promotion of a catalytic amount of ytterbium(III) triflate (Yb(OTf)3), which is a stable Lew...

Shu，Kobayashi，Iwao，... - 《Journal of Organic Chemistry》

ChemInform Abstract: Facile and Highly Stereoselective Synthesis of Homoallylic Alcohols Using Organosilicon Intermediates.

ChemInform is a weekly ing Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform ...

S.，KOBAYASHI，K.，... - 《Cheminform》

A catalytic enantioselective reaction using a C2-symmetric disulfonamide as a chiral ligand: Simmons-Smith cyclopropanation of allylic alcohols by the Et2Z...

A catalytic and enantioselective Simmons-Smith Cyclopropanation of an allylic alcohol was developed by the reaction of an allylic alcohol with Et2Zn and CH...

Hideyo，Takahashi，and，... - 《Tetrahedron》