Brief introduction of Boc-Hyp-OL

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Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels.In a patent， Application In Synthesis of Boc-Hyp-OL, Which mentioned a new discovery about 61478-26-0

We described the preparation of methoxy-substitued BPPM ((2S,4S)-N-(tert-butoxycarbonyl)-4-(diphenylphosphino)-2-<(diphenylphosphino)-methyl>pyrrolidine) analogues for highly effective asymmetric hydrogenation of (Z)-acetamidocinnamic acid. o-Methoxy-BPPM-Rh+ was very high optical yield (98percent enantiomeric excess (ee), (R)) and p-methoxy-BPPM-Rh+ was very actively catalytic (/=104).On the bases of these result and our respectively control concept, we developed a highly effective chiral ligand (5) for asymmetric synthesis of N-acetylphenylalanine.

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Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI