| Chiral Phosphine Ligands Derived from Sugars8. Crystal and Molecular Structure of Diphenyl (methyl 4', 6'-O-benzylidene-2'-deoxy-α-D-altropyranoside-2-)phosphine Oxide |
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| 作者姓名： | SHI Ji--Cheng |
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| 作者单位： | SHI Ji--Cheng (State Key Laboratory of Structural Chemistry and Fujian Institute of Researchon the Structure of Matter，the Chirae Academy of Sciences，Fuzhou 350002 |
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| 摘 要： | 1INTRODUCTIONChiralphosphinesareusefulligandsinenantioselectivecatalysiswithtransitionmetalcomplexes"',someofthemderivedfromsugarsarealsoofPOtentialapplicationsinbiphasiccatalysis"'andmedicinet3i.Bythenucleophilicreplacementreaction,itisdifficulttolinkthephosphorusatomtothesecondarycarbonofpyrano--,orfurano--sugarderivativesbecauseofthecompetingeliminationreaction4i.Wehavefoundaneffectivemethodtoincorporateaphosphorusintoapyranosering"',viaregioselectiveandstereospecificring--openingreac…
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| 关 键 词： | chiral phosphine oxide α-D-allopyranoside α-D-altropyranoside crystal structure |
Chiral Phosphine Ligands Derived from Sugars 8. Crystal and Molecular Structure of Diphenyl (methyl 4', 6'-O-benzylidene-2'-deoxy-α-D-altropyranoside-2-)phosphine Oxide |
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| SHI Ji--Cheng.Chiral Phosphine Ligands Derived from Sugars 8. Crystal and Molecular Structure of Diphenyl (methyl 4', 6'-O-benzylidene-2'-deoxy-α-D-altropyranoside-2-)phosphine Oxide[J].Chinese Journal of Structural Chemistry,1997(1). |
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| Authors: | SHI Ji--Cheng |
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| Abstract: | The crystal structure of the title compound, C26H27O6P, has been determined by single--crystal X-ray diffraction. The crystal is monoclinic with space groupP21, a=16. 193(l), b=5. 804(1), c=12. 512(2) A, β=93. 187(5)°, V=1174. 13A3, Dc=1. 319 g/cm3, F(000) =492, μ= 13. 52 cm-1, Z= 2, and final R= 0. 042and Rw= 0. 040 for 2349 reflections (I≥3σ(I)). Structure analysis revealed that thepyranose and 4, 6-O-benzylidene ring of the title compound adopts a distorted chair conformation. |
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| Keywords: | chiral phosphine oxide α-D-allopyranoside α-D-altropyranoside crystal structure |
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