引用本文:
高连勋, 丁孟贤. 两种新的手性1,6-双膦的合成[J]. 应用化学,
1989, 6(1): 26-29.
Citation: Gao Lianxun, Ding Mengxian. SYNTHESS OF TWO NOVEL CHIRAL 1, 6-DIPHOSPHINES[J]. Chinese Journal of Applied Chemistry, 1989, 6(1): 26-29.
Citation: Gao Lianxun, Ding Mengxian. SYNTHESS OF TWO NOVEL CHIRAL 1, 6-DIPHOSPHINES[J]. Chinese Journal of Applied Chemistry, 1989, 6(1): 26-29.
两种新的手性1,6-双膦的合成
English
SYNTHESS OF TWO NOVEL CHIRAL 1, 6-DIPHOSPHINES
Abstract:
Two novel chiral diphosphines, 1, 6 -bis(diphenyl-phosphino)-2, 3, 4, 5- dibenzylidene-D-mannitol and 1, 6-bis-(diphenylphosphino)-3, 4-benzylidene- 2, 5-methylene-D-mannitol have been synthesized from D-mannitol. The Rh(I) complexes of both chiral ligands have been used as catalysts in the asymmetic hydrogenation of α-acetamidocinnamic acid, but no enantioselectivity was observed in both cases, furthermore, no hydrogenation activity was Shown in the reaction in the presence of the former ligand.A preliminary explanation of the results observed in asymmetrie hydrogenation is suggested in the paper.
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Key words:
- D-mannitol
- / Chiral diphosphine
- / Asymmetric hydrogenation
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