The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: PD2DBA3(SMILESS: O=C(/C=C/C1=CC=CC=C1)/C=C/C2=CC=CC=C2.O=C(/C=C/C3=CC=CC=C3)/C=C/C4=CC=CC=C4.O=C(/C=C/C5=CC=CC=C5)/C=C/C6=CC=CC=C6.[Pd].[Pd],cas:60748-47-2) is researched.Formula: C51H42O3Pd2. The article 《Ligand-Controlled Regiodivergence for Catalytic Stereoselective Semireduction of Allenamides》 in relation to this compound, is published in Chemistry – A European Journal. Let’s take a look at the latest research on this compound (cas:60748-47-2).
Ligand-controlled regiodivergence was developed for catalytic semiredn. of allenamides with excellent chemo- and stereocontrol. This system also provided an example of catalytic regiodivergent semiredn. of allenes for the first time. The divergence of the semiredn. was enabled by ligand switch with the same palladium pre-catalyst under operationally simple and mild conditions. Monodentate ligand XPhos exclusively promoted selective 1,2-semiredn. to afford allylic amides, while bidentate ligand BINAP completely switched the regioselectivity to 2,3-semiredn., producing (E)-enamide derivatives
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Reference:
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method