Intermolecular oxygen atom⋯π interaction in the crystal packing of chiral amino alcohol bearing a pentafluorophenyl group
摘要:
Presence of an unique atom-to-face alcoholic oxygen atom...pi interaction between a pentafluorophenyl group and alcoholic oxygen (O...pi) has been demonstrated by X-ray analysis of the novel chiral amino alcohol instead of the well-known interaction between usual aromatic ring and alcoholic hydrogen atom (OH...pi). (C) 2003 Elsevier Science B.V. All rights reserved.
Presence of an unique atom-to-face alcoholic oxygen atom...pi interaction between a pentafluorophenyl group and alcoholic oxygen (O...pi) has been demonstrated by X-ray analysis of the novel chiral amino alcohol instead of the well-known interaction between usual aromatic ring and alcoholic hydrogen atom (OH...pi). (C) 2003 Elsevier Science B.V. All rights reserved.
Effect of conformational control of chiral oxazaborolidine by π–π stacking interaction of a pentafluorophenyl group toward asymmetric borane reduction
act as a stereo-controlling group in oxazaborolidine-catalyzedasymmetricboranereduction through intramolecular π–π stacking interaction with a phenyl group. The intramolecular π–π interaction in oxazaborolidine bearing pentafluorophenyl group is confirmed by calculations and 1H NMR study. The interaction affects the enantioselectivity of the asymmetricreduction of acetophenone while the extent is
五氟苯基通过与苯基的分子内π-π堆积相互作用,可以作为恶唑硼烷催化的不对称硼烷还原中的立体控制基团。通过计算和1 H NMR研究证实了带有五氟苯基的恶唑硼烷的分子内π-π相互作用。相互作用影响苯乙酮不对称还原的对映选择性,而程度很小。