Deng, Hao; Dong, Yujie; Shangguan, Yu; Yang, Fazhou; Han, Sheng; Wu, Jiaqi; Liang, Bo; Guo, Hongchao; Zhang, Cheng published their research in Organic Letters in 2021. The article was titled 《Copper-Catalyzed Three-Component Carboboronation of Allenes Using Highly Strained Cyclic Ketimines as Electrophiles》.SDS of cas: 210169-54-3 The article contains the following contents:
A diastereoselective copper and NHC-ligand-catalyzed three-component difunctionalization of allenes RCH:C:CH2 with bis(pinacolato)diboron and 2H-azirines Ar1CHC(N)CAr2 to afford borylated allylaziridines Ar1CHC(NH)CAr2CHRC(Bpin):CH2 is described. The reaction exhibits complete diastereoselectivity and good yields, and the further chlorination of the corresponding borylated products was also performed. It is believed that the high ring-strain force of 2H-azirines facilitates the reaction. More chem. transformations of borylated allylaziridines are also reported.(S)-5,5′-Bis(diphenylphosphino)-4,4′-bi-1,3-benzodioxole(cas: 210169-54-3SDS of cas: 210169-54-3) was used in this study.
(S)-5,5′-Bis(diphenylphosphino)-4,4′-bi-1,3-benzodioxole(cas: 210169-54-3) may be used for: regio- and stereoselective preparation of axially chiral arylnaphthalene derivatives via rhodium-catalyzed [2+2+2] cycloaddition of diynes with naphthalenepropynoic acid derivatives or diastereo- and enantioselective hydrogenation of α-amino-β-keto ester hydrochlorides catalyzed by an iridium complex.SDS of cas: 210169-54-3
Referemce:
Phosphine ligand,
Chiral phosphines in nucleophilic organocatalysis