β-Chloroamine hydrochlorides, produced stereospecifically and regiospecifically from aziridines with anhydrous hydrogen chloride in ether, are condensed with sodium carbonate in dry DMSO to afford isomerically pure 2-oxazolidinones.
Stereochemistry and chiroptical properties of the nonplanar nitrosamine group in N-nitrosoaziridines
作者:G. V. Shustov、A. V. Kachanov、G. K. Kadorkina、R. G. Kostyanovskii、Arvi Rauk
DOI:10.1021/ja00047a041
日期:1992.10
The stereochemistry and the chiropticalproperties of the nonplanar nitrosamine group were investigated by means of nonempirical quantum chemical calculations on 1-nitrosoaziridine, (2R)-2-methyl-1-nitrosoaziridine, and (2S,3S)-2,3-dimethyl-1-nitrosoaziridine, and by experimental measurement of the CD spectra of compounds 2, 3, (2S)-2-carbomethoxy-1-nitrosoaziridine, and (2S,3S)-2,3-bis(isopropoxy
Chiroptical properties of C2-symmetric N-haloaziridines. Chiral rules for the N-haloaziridine chromophore
作者:G. V. Shustov、A. V. Kachanov、V. A. Korneev、R. G. Kostyanovsky、A. Rauk
DOI:10.1021/ja00075a048
日期:1993.11
Haloaziridines 1a,b are an example of the «pure» N-haloaziridine chromophore which has the first Cotton effect (CE) in the region of 260-300 nm. A quadrant rule which connects the first CE sign with the stereochemical environment of the chromophore is offered. Haloaziridinecarboxylic esters are a specific case of the N-haloaziridine chromophore. The second CE sign at 220-230 nm in the CD spectra of these
C 2 -对称氮丙啶(2S,3S)-1-卤素-2,3-二甲基氮丙啶1a,b和(2S,3S)-1-卤素-2的N-氯(a)和N-溴(b)衍生物,获得3-双(烷氧基羰基)氮丙啶2a,b和3a,b。卤代氮丙啶 1a、b 是“纯”N-卤代氮丙啶发色团的一个例子,它在 260-300 nm 范围内具有第一棉花效应 (CE)。提供了将第一个 CE 符号与发色团的立体化学环境联系起来的象限规则。卤代氮丙啶羧酸酯是 N-卤代氮丙啶发色团的一种特殊情况。这些化合物的 CD 光谱中 220-230 nm 处的第二个 CE 符号遵循反向象限规则
Chemistry of nitrosoureas. Decomposition of 1,3-bis(threo-3-chloro-2-butyl)-1-nitrosourea and 1,3-bis(erythro-3-chloro-2-butyl)-1-nitrosourea
作者:Robert B. Brundrett、Michael Colvin
DOI:10.1021/jo00442a020
日期:1977.10
Jones, Journal of Organic Chemistry, 1944, vol. 9, p. 491