Assessing the halogen effect in Diels–Alder reactions involving chiral α-halo enones. A combined experimental and DFT computational approach
作者:Ariel M. Sarotti、Rolando A. Spanevello、Alejandra G. Suárez
DOI:10.1016/j.tetlet.2011.05.143
日期:2011.8
experimental and computational study was conducted to assess the effect of chlorine and bromine substitution in Diels–Alderreactions involving chiral α-halo enones as dienophiles. An important rate enhancement was observed in the case of acyclic dienes, while the use of cyclic dienes resulted in prolonged reaction times and lower yields. DFT calculations suggest that these reactions are governed by finely