Enantioselective palladium-catalyzed addition of malonates to 3,3-difluoropropenes
作者:Myriam Drouin、Jean-François Paquin
DOI:10.1016/j.tet.2018.08.034
日期:2018.10
Monofluoroalkenes bearing a malonate unit at the β position can be synthesized by the enantioselectiveaddition of diesters to 3,3-difluoropropenes. The difference in reactivity regarding the geometry and the substituents of the alkene of the 3,3-difluoropropenes, as well as the alkyl groups of the malonates, was studied and limitations were identified. The reaction was also performed with different
The first highlyenantioselective CuI‐catalyzed azide‐alkyne cycloaddition (CuAAC) of tertiaryalcohols and their kineticresolution is reported. This approach allows facile access to multifunctional tertiaryalcohols featuring an α‐ethynyl or α‐triazole moiety, and represents the first successful kineticresolution of racemates with a tetrasubstituted carbon stereocenter via CuAAC. Newly developed