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Nitrogen-containing derivatives of pyrone-4-carboxylic acid

โœ Scribed by G. A. Khutornenko; S. M. Klyuev; Yu. V. Burov; V. N. Zhukov; A. E. Vasil'ev


Book ID
112401321
Publisher
Springer
Year
1983
Tongue
English
Weight
427 KB
Volume
17
Category
Article
ISSN
0091-150X

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Chiral Recognition of Carboxylic Acids b
โœ Yan-Song Zheng; Qin Xiao ๐Ÿ“‚ Article ๐Ÿ“… 2005 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 124 KB

## Abstract Chiral nitrogenโ€containing calix[4]arene was easily synthesized by the reaction of 25,27โ€di(2โ€bromoethoxy)โ€26,28โ€dihydroxyโ€5,11,17,23โ€tetrakis(__t__โ€butyl)calix[4]arene with __S__โ€((โˆ’)โ€1โ€phenylethylamine in excellent yield, and showed good ability to recognize the enantiomers of mandeli