Asymmetric Photochemical Reaction of 5-Methylbicyclo[1.1.1]-pentanyl Ketone
Asymmetric Photochemical Reaction of 5-Methylbicyclo[1.1.1]-pentanyl Ketone
复制标题
5-甲基双环[1.1.1]-戊酮的不对称光化学反应
DOI:
--
复制
发表时间:
2012-07
影响因子:
3.1
通讯作者:
ZHANG Ke
中科院分区:
文献类型:
--
作者:
WANG Xiao-lin;ZHANG Ke
The density functional theory(DFT) calculations were performed to investigate a typical Norrish/Yang type II photoreaction of 5-methylbicyclo[1.1.1]-pentanyl ketone. The results reveal the essential correlation between structures on the one hand and energies, on the other hand, of the reactants, transition states and products based on both singlet ground(S0) and triplet excited(T1) potential energy surfaces. The feasible mechanism indicates that an intramolecular Norrish/Yang cyclization reaction takes place via H-abstraction to obtain the sole chiral cyclobutanol photoproduct. The located crossing point plays an important role in the cyclization process, which permits intersystem crossing(ISC) from T1 to S0 state. The rate-determining step may be to experience ISC between two different potential energy surfaces, requiring sufficient time for electron spin reversion, i.e., spin multiplicity alteration. These conclusions are further confirmed by the second-order Moller-Plesset perturbation theory(MP2) calculations.
DOI:
10.14288/1.0059541
发表时间:
1997
期刊:
--
影响因子:
--
作者:
M. Leibovitch
通讯作者:
M. Leibovitch
DOI:
10.1007/978-94-015-8539-2
发表时间:
1995
期刊:
--
影响因子:
--
作者:
D. Heidrich
通讯作者:
D. Heidrich