CHIROPTICAL PROPERTIES OF THE NONPLANAR AMIDE CHROMOPHORE IN N-ACYLAZIRIDINES
The optically active 1-acyl-substituted (1R,2R)-2-methyl- and (1R,2S)-2-methoxycarbonylaziridines were synthesized.The nonplanarity of the amide chromophore in them and its high conformational mobility, which was caused by the rotation around the N-C(O) bond, were shown on the basis of the investigation of the CD spectra and the calculations of simple models by the MNDO method.The possible correlation of the sign of the Cotton effect of the long-wave p-?* transition with the intrinsic chirality of the chromophore was studied.
Shustov, G. V.,Polyak, F. D.,Kadorkina, G. K.,Vosekalna, I. A.,Shokhen, M. A.,et al.
p. 32 - 39
(2007/10/02)
DERIVATIVES OF AZIRIDINE-1,2-DICARBOXYLIC ACID
The corresponding esters and amides of aziridine-1,2-dicarboxylic acid were obtained by the reaction of esters and amides of aziridine-2-carboxylic acid with esters and amides of chlorocarbonic acid, isocyanates, and isothiocyanates.The reaction of 2-methoxycarbonylaziridine with diisocyanates and chlorides of the dicarboxylic acids leads to the formation of bisaziridines.
Trapentsier, P. T.,Kalvin'sh, I. Ya.,Liepin'sh, E. E.,Lukevits, E. Ya.,Kauss, V. Ya.
p. 891 - 895
(2007/10/02)
More Articles about upstream products of 123620-70-2