Stable arylnitrileoxides (1b-e) and 1-ethoxycarbonyl-4-methyl and 6-methyl-1,2-diazepines (2f and 2h) undergo 1,3-cycloaddition reactions to give 1,2,4-oxadiazole derivatives (3) as the most abundant products. Secondary products of the class of isoxazoles (5 or 8) and 4,5-dihydroisoxazoles (6 or 7) were also identified. Overall kinetics were measured at 70.0°C, in mixtures of 1,1,2,2-tetrachloroethane
Synthesis of simple monocyclic 1,3-diazepines from 1,2-diazepines
作者:Takashi Tsuchiya、Jyoji Kurita、Hirokazu Kojima
DOI:10.1039/c39800000444
日期:——
Thermolysis of the 1H-1,2-diazepines having an electron-donating substituent in the 4- or 6-position affords the corresponding 1,3-diazepines, whereas 1,2-diazepines having electron-withdrawing substituents do not show this ring-conversion.
在4-或6-位具有给电子取代基的1 H -1,2-二氮杂进行热解,得到相应的1,3-二氮杂s,而具有吸电子取代基的1,2-二氮杂do没有显示该环-转换。
Nastasi,M.; Streith,J., Bulletin de la Societe Chimique de France, 1973, p. 635 - 637
作者:Nastasi,M.、Streith,J.
DOI:——
日期:——
TSUCHIYA T.; KURITA J.; KOJIMA H., J. CHEM. SOC. CHEM. COMMUN., 1980, NO 10, 444-445
作者:TSUCHIYA T.、 KURITA J.、 KOJIMA H.
DOI:——
日期:——
LUTTRINGER J. P.; PEROL N.; STREITH J., TETRAHEDRON <TETR-AB>, 1975, 31, NO 19, 2435-2439