Calo, Fabio P. published the artcileA Heteroleptic Dirhodium Catalyst for Asymmetric Cyclopropanation with ¦Á-Stannyl ¦Á-Diazoacetate. “Stereoretentive” Stille Coupling with Formation of Chiral Quarternary Carbon Centers, COA of Formula: C9H21NO3, the publication is Angewandte Chemie, International Edition (2020), 59(33), 13900-13907, database is CAplus and MEDLINE.
The heteroleptic dirhodium paddlewheel catalyst 7 with a chiral carboxylate/acetamidate ligand sphere is uniquely effective in asym. [2+1] cycloadditions with ¦Á-diazo-¦Á-trimethylstannyl (silyl, germyl) acetate. Originally discovered as a trace impurity in a sample of the homoleptic parent complex [Rh2((R)-TPCP)4] (5), the protic acetamidate ligand is quintessential for rendering 7 highly enantioselective. The -NH group is thought to lock the ensuing metal carbene in place via interligand H bonding. The resulting stannylated cyclopropanes undergo stereoretentive cross coupling, which shows that even chiral quaternary C centers can be made by the Stille-Migita reaction.
Angewandte Chemie, International Edition published new progress about 17351-61-0. 17351-61-0 belongs to catalysis-chemistry, auxiliary class Phase Transfer Catalyst, name is Tetraethylammonium hydrogencarbonate, and the molecular formula is C9H21NO3, COA of Formula: C9H21NO3.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia