The purpose of {(R)-(+)-7-[N-(1,3-dithian-2-yl)methylamino]-7'-[bis(3,5-di-t-butylphenyl)phosphino]-2,2',3,3'-tetrahydro-1,1'-spirobindane}chlorodihydroiridium(III), 97+% [Ir-(R)-DTB-SpiroSAP] is to serve as a catalyst for the asymmetric hydrogenation of β-alkyl-β-ketoesters, facilitating this reaction with high efficiency and specificity.
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