| Autor: |
Miyano, Sotaro, Nawa, Masayoshi, Mori, Akira, Hashimoto, Harukichi |
| Zdroj: |
Bulletin of the Chemical Society of Japan; August 1984, Vol. 57 Issue: 8 p2171-2176, 6p |
| Abstrakt: |
Axially dissymmetric bisphosphine ligands, (R)- and (S)-2,2'-bis(diphenylphosphinoamino)-1,1'-binaphthyl (BDPAB) and (R)-2,2'-bis[N-(diphenylphosphino)methylamino]-1,1'-binaphthyl (Me-BDPAB) were conveniently prepared from 2,2'-diamino-1,1'-binaphthyl. The rhodium(I)-catalyzed asymmetric hydrogenation of a-acylamidoacrylic acids and esters gave the corresponding amino acids of up to 95% optical purity. The sign of the centro-chirality of the product amino acids was always the same to that of the axial chirality of the ligand in both cases of BDPAB and Me-BDPAB. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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