Preparation of homochiral phenolic crown ethers containing para-substituted phenol moiety and chiral subunits derived from (S)-1-phenylethane-1,2-diol: their chiral recognition behaviour in complexation with neutral amines
Crownethers 1–6 containing two chiralsubunits derived from (S)-1-phenylethane-1,2-diol and a phenol moiety bearing an intra-annular OH group and an additional para-substituent have been prepared in enantiomerically pure forms and their enantiomerrecognition behaviour in complexation with neutral amines has been examined by the 1H n.m.r. spectroscopic method.
已制备对映体纯形式的冠醚1-6,它们含有两个衍生自(S)-1-苯基乙烷-1,2-二醇的手性亚基和一个带有环内OH基的酚部分以及一个额外的对位取代基,通过1 H nmr光谱法检查了与中性胺络合时对映体的识别行为。