Chiral mono and diamide derivatives of calix[4]arene for enantiomeric recognition of chiral amines
โ Scribed by Erdal Kocabas; Mustafa Durmaz; Sabri Alpaydin; Abdulkadir Sirit; Mustafa Yilmaz
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 244 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0899-0042
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## Abstract Chiral nitrogenโcontaining calix[4]arene was easily synthesized by the reaction of 25,27โdi(2โbromoethoxy)โ26,28โdihydroxyโ5,11,17,23โtetrakis(__t__โbutyl)calix[4]arene with __S__โ((โ)โ1โphenylethylamine in excellent yield, and showed good ability to recognize the enantiomers of mandeli
## Abstract The syntheses of chiral calix[4]arene derivatives bearing amino acid residue at the lower rim or upper rim by three different methods were reported.
## Abstract Introduction of the nonโcomplexing chiral (__S__)โ2โmethylbutoxy substituent close to the complexing site of a bis[(bipyridinyl)methoxy]calixarene podand resulted in the induction of an enantiomeric excess of __ca.__ 30 % in the corresponding chiral Cu^I^ complex. Structural investigati