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Chiroptical properties of 2-alkylaziridines and their N-methyl derivatives

✍ Scribed by L. Maat; R. W. Wulkan


Book ID
104588329
Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
390 KB
Volume
100
Category
Article
ISSN
0165-0513

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✦ Synopsis


Abstract

Some optically active 2‐alkylaziridines and their N‐methyl derivatives have been prepared from the corresponding L‐amino acids. Both the ORD and the CD spectra of the aziridines have been determined. From these spectra it is concluded that a cis orientation of the lone pair of the nitrogen, relative to the 2‐alkyl substituent, can be correlated with a negative Cotton effect in the 200 nm region.


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## Abstract The large molecules **1**–**3** (69, 90, and 102 atoms, respectively), prepared by cyclotrimerization of enantiomerically pure derivatives of (βˆ’)‐bornyl acetate, show intense ECD spectra, high optical rotation (OR) values (200–1300, in absolute value) dominated in sign and order of magn