Organocatalytic Michael Addition/Intramolecular Julia–Kocienski Olefination for the Preparation of Nitrocyclohexenes
摘要:
An asymmetric organocatalytic [3 + 3] annulation strategy based on a Michael addition/intramolecular Julia-Kocienslci olefination sequence has been developed for the synthesis of 4-substituted-5-nitrocyclohex-1-ene compounds. The strategy is an alternative to the direct reluctant enantioselective Diels-Alder approach. The potential of the methodology has been demonstrated with a concise enantioselective formal synthesis of trandolapril.
Organocatalytic Michael Addition/Intramolecular Julia–Kocienski Olefination for the Preparation of Nitrocyclohexenes
作者:Eduardo Rodrigo、José Luis García Ruano、M. Belén Cid
DOI:10.1021/jo401686u
日期:2013.11.1
An asymmetric organocatalytic [3 + 3] annulation strategy based on a Michael addition/intramolecular Julia-Kocienslci olefination sequence has been developed for the synthesis of 4-substituted-5-nitrocyclohex-1-ene compounds. The strategy is an alternative to the direct reluctant enantioselective Diels-Alder approach. The potential of the methodology has been demonstrated with a concise enantioselective formal synthesis of trandolapril.
Expanding the Potential of Heteroaryl Vinyl Sulfones
作者:Eduardo Rodrigo、Inés Alonso、José Luis García Ruano、M. Belén Cid
DOI:10.1021/acs.joc.6b01956
日期:2016.11.18
fields such as organic synthesis and bioconjugate formation. This was demonstrated by performing a systematic assessment of its reactivity in Michael, radical, and cycloaddition reactions. Heteroaryl vinyl sulfone 3 presented excellent output in terms of reactivity and selectivity, proving superior to phenyl vinyl sulfone 1 and with clear advantages over bis-sulfone 2. This behavior might be due to the