Capture–Collapse Heterocyclization: 1,3-Diazepanes by C–N Reductive Elimination from Rhodacyclopentanones
摘要:
Rhodacydopentanones derived from carbonylative C-C activation of cyclopropyl ureas can be "captured" by pendant nucleophiles prior to "collapse" to 1,3-diazepanes. The choice of N-substituent on the cyclopropane unit controls the oxidation level of the product, such that C4-C5 unsaturated or saturated systems can be accessed selectively.
The first synthesis of nitro-substituted cyclopropanes and spiropentanes via oxidation of the corresponding amino derivatives
作者:Yuliya A. Volkova、Olga A. Ivanova、Ekaterina M. Budynina、Eugene V. Revunov、Elena B. Averina
DOI:10.1016/j.tetlet.2009.03.165
日期:2009.6
A novel approach to nitro-substituted cyclopropanes and spiropentanes via oxidation of the corresponding amines with dimethyldioxirane is reported. The method is used successfully for the preparation of a series of nitrocyclopropanes as well as for the first synthesis of 1,4-dinitrospiro[2.2]pentane.
Capture–Collapse Heterocyclization: 1,3-Diazepanes by C–N Reductive Elimination from Rhodacyclopentanones
作者:Niall G. McCreanor、Steven Stanton、John F. Bower
DOI:10.1021/jacs.6b07046
日期:2016.9.14
Rhodacydopentanones derived from carbonylative C-C activation of cyclopropyl ureas can be "captured" by pendant nucleophiles prior to "collapse" to 1,3-diazepanes. The choice of N-substituent on the cyclopropane unit controls the oxidation level of the product, such that C4-C5 unsaturated or saturated systems can be accessed selectively.