Application of Photoclick Chemistry for the Synthesis of Pyrazoles via 1,3-Dipolar Cycloaddition between Alkynes and Nitrilimines Generated In Situ
作者:Richard Remy、Christian G. Bochet
DOI:10.1002/ejoc.201701225
日期:2018.1.23
The photolysis of tetrazoles leads to the extrusion of dinitrogen and forms a reactive nitrile imine intermediate. The latter can then react in situ with alkynes in a [3+2] cycloaddition providing pyrazoles. Some reactivity trends were identified, such as a preference for electron‐poor alkynes. On the tetrazole part, there is a clear preference for either aromatic or conjugated substituents.
Murray, William V.; Wachter, Michael P., Journal of Heterocyclic Chemistry, 1989, vol. 26, p. 1389 - 1392
作者:Murray, William V.、Wachter, Michael P.
DOI:——
日期:——
Functionalized heterocyclic scaffolds derived from Morita–Baylis–Hillman Acetates
作者:Huajian Zhu、Nana Shao、Tong Chen、Hongbin Zou
DOI:10.1039/c3cc43285h
日期:——
Five series of heterocycles with extraordinary structural diversity have been regiospecifically synthesized from the same MoritaâBaylisâHillman Acetates (MBHAs). All four potential electrophilic sites (α, β, γ, δ) of MBHAs are proved to be reactive.