Catalytic Asymmetric Conjugate Addition of Dialkylzinc Reagents to β‐Aryl‐α,β‐unsaturated N‐2,4,6‐Triisopropylphenylsulfonylaldimines with Use of N...

Asymmetric conjugate addition of dialkylzinc to alpha,beta-unsaturated N-2,4,6-triisopropylphenylsulfonylaldimines 9 was catalyzed by 5 mol % N-Boc-L-valin...

T Soeta，M Kuriyama，K Tomioka - 《Cheminform》

Catalytic Asymmetric Conjugate Addition of Dialkylzinc Reagents to β-Aryl-α,β-unsaturated N-2,4,6-Triisopropylphenylsulfonylaldimines with Use of N-Boc-l-Val-Connected Amidophosphane-Copper(I) Catalyst

Asymmetric conjugate addition of dialkylzinc to α,β-unsaturated N-2,4,6-triisopropylphenylsulfonylaldimines 9 was catalyzed by 5 mol % N-Boc-l-valine-connected amidophosphane 5a-Cu(MeCN)4BF4 in the presence of 4 MS in toluene to affor...

Takahiro，Soeta，Masami，... - 《The Journal of Organic Chemistry》

Catalytic Asymmetric Conjugate Addition of Dialkylzinc Reagents to β-Aryl-α,β-unsaturated N-2,4,6-Triisopropylphenylsulfonylaldimines with Use of N-Boc-...

Asymmetric conjugate addition of dialkylzinc to α,β-unsaturated N-2,4,6-triisopropylphenylsulfonylaldimines 9 was catalyzed by 5 mol % N-Boc-l-valine-connected amidophosphane 5a-Cu(MeCN)4BF4 in the presence of 4 MS in toluene to affor...

Takahiro Soeta，Masami Kuriyama，Kiyoshi Tomioka

Enantiopure N-Acyldihydropyridones as Synthetic Intermediates:  Asymmetric Syntheses of Indolizidine Alkaloids (−)-205A, (−)-207A, and (−)-235B

Concise asymmetric syntheses of indolizidine alkaloids (−)-205A, (−)-207A, and (−)-235B were accomplished with a high degree of stereocontrol in eleven steps. Addition of 4-(1-butenyl)magnesium bromide to 1-acylpyridinium salt 5...

DL Comins，DH Lamunyon，X Chen - 《Journal of Organic Chemistry》

Asymmetric Synthesis of β-Alkynyl Aldehydes by Rhodium-Catalyzed Conjugate Alkynylation

To the point: The rhodium-catalyzed asymmetric conjugate alkynylation of ,β-unsaturated aldehydes with triisopropylsilyl acetylene proceeded efficiently i...

Takahiro Nishimura，Takahiro Sawano，Tamio Hayashi - 《Angewandte Chemie International Edition》

Catalytic Asymmetric Conjugate Addition of Dialkylzinc Reagents to β-Aryl-α,β-unsaturated N-2,4,6-Triisopropylphenylsulfonylaldimines with Use of N-Boc-...

Asymmetric conjugate addition of dialkylzinc to α,β-unsaturated N-2,4,6-triisopropylphenylsulfonylaldimines 9 was catalyzed by 5 mol % N-Boc-l-valine-con...

Takahiro，Soeta，Masami，... - 《Journal of Organic Chemistry》

Asymmetric syntheses of APTO and AETD: the β-amino acid fragments within microsclerodermins C, D, and E.

The conjugate addition of lithium (R)-N-benzyl-N-(α-methylbenzyl)amide to tert-butyl (E,E)-7-(triisopropylsilyloxy)hepta-2,4-dienoate and in ...

SG Davies，MF Ai，EM Foster，... - 《Journal of Organic Chemistry》

Asymmetric conjugate addition of bromonitromethane to cyclic enones catalyzed by chiral monosulfonated diamines

A series of chiral monosulfonated diamines were prepared and used as the catalysts for asymmetric conjugate addition of bromonitromethane to a,尾-unsaturat...

Q.-S. Du，L.-T. Dong，J.-J. Wang，... - 《Arkivoc Online Journal of Organic Chemistry》

ChemInform Abstract: Enantiopure N-Acyldihydropyridones as Synthetic Intermediates: Asymmetric Synthesis of (-)-Septicine and (-)-Tylophorine

A concise asymmetric synthesis of (-)-septicine (1) and (-)-tylophorine (2) was accomplished with a high degree of stereocontrol in eight and nine steps, r...

DL Comins，X Chen，LA Morgan - 《Journal of Organic Chemistry》

Rhodium-catalyzed asymmetric conjugate alkynylation of nitroalkenesElectronic supplementary information (ESI) available: Experimental procedures and compou...

Asymmetric addition of (triisopropylsilyl)acetylene to nitroalkenes took place in the presence of a rhodium/chiral bisphosphine catalyst to give β-alkynyl...

Nishimura，Takahiro，Sawano，... - 《Chemical Communications》