Interaction of a C–F Bond with the π-System of a C═C Bond or “Head On” with a Proximate C–H Bond
摘要:
We describe the synthesis and preliminary study of two molecules, in which a fluorine atom is positioned proximately above the pi-orbitals of a C=C bond or else wherein a C-F bond interacts in a "head on" fashion with a proximate C-H bond. The spectroscopic characteristics of these unusual interactions are documented, X-ray crystallographic analyses are reported, and theoretical calculations are employed to support the observed spectroscopy.
The thermal deazetations of fluorinated 2,3-diazabicyclo[3.2.0]hept-2-enes
作者:William R. Dolbier、Dheya M. Al-Fekri
DOI:10.1016/s0040-4020(01)89928-2
日期:1987.1
Thermal deazetation of difluoro- and tetrafluoro-2,3-diazabicyclo[3.2.0]hept-2-enes proceed via two parallel mechanistic pathways, one involving formation of a diradical via simple N2 loss, and the other proceeding via a retro-dipolar cycloaddition process. A key finding was the absence of isolation of a bicyclopentane product in the difluoro case.
DOLBIER W. R., JR.; AL-FEKRI DHEYA M., TETRAHEDRON, 43,(1987) N 1, 39-44
作者:DOLBIER W. R., JR.、 AL-FEKRI DHEYA M.
DOI:——
日期:——
Interaction of a C–F Bond with the π-System of a C═C Bond or “Head On” with a Proximate C–H Bond
作者:Michael T. Scerba、Steven Bloom、Nathan Haselton、Maxime Siegler、Jake Jaffe、Thomas Lectka
DOI:10.1021/jo2024152
日期:2012.2.3
We describe the synthesis and preliminary study of two molecules, in which a fluorine atom is positioned proximately above the pi-orbitals of a C=C bond or else wherein a C-F bond interacts in a "head on" fashion with a proximate C-H bond. The spectroscopic characteristics of these unusual interactions are documented, X-ray crystallographic analyses are reported, and theoretical calculations are employed to support the observed spectroscopy.