Med. Chem; b), 527Chemistry of Heterocyclic Compounds, vol.12, p.887, 2005. ,
For selected recent publications, Angew. Chem. Int. Ed, vol.56, p.5424, 2017. ,
, Adv. Synth. Catal, vol.360, p.4769, 1128.
, Tetrahedron: Asymmetry, vol.119, p.5472, 1997.
, Adv. Synth. Catal, p.163, 2017.
,
, Org. Lett, vol.23, p.1584, 1253.
, Chem. Commun, p.3407, 2015.
, Tetrahedron Lett, vol.20, p.18245, 2012.
During the preparation of this manuscript, Adv. Synth. Catal, vol.360, p.3138, 2018. ,
, For a pioneering Pd-catalyzed decarboxylative protonation approach, p.1039, 2008.
, For reviews on decarboxylative protonation, p.5493, 2008.
, Eur. J. Org. Chem, p.394, 2014.
, For leading publications, vol.9, 2003.
, Eur. J. Org. Chem, vol.57, p.4562, 2016.
, Eur. J. Org. Chem, 1975.
, Chem. Commun, p.11569, 2013.
, For reviews on Meldrum's acid in catalysis, see: a) A
, Acc. Chem. Res, vol.43, p.1882, 2009.
, First enantioselective decarboxylative chlorination of ?-ketocarboxylic acids, vol.8, p.15600, 2017.
, For reviews on Cupreines, vol.45, p.429, 2006.
, Chem. Eur. J, vol.21, p.6037, 2015.
, Indeed, the previously developed decarboxylative protonation reaction, triggered by the intermolecularaddition of phenol to C5-arylated MA, required the use of a stronger phosphate base in the presence of a quaternary ammonium salt upon phase-transfer conditions to occur, see reference 10
, For an example of mechanistic investigation of cyclocondensation reaction with Meldrum's acid, see: N
, Chem. Eur. J, vol.24, p.4086, 2018.
, CCDC 1870775 (2q) contain the supplementary crystallographic data for this paper. These data can be obtained free of charge from The Cambridge Crystallographic Data Centre
, Bioorg. Med. Chem, p.3720, 2009.
, For reviews on catalytic chlorination reaction, vol.5, issue.2, p.1428, 2013.
, Negligible ee were obtained for the chlorination reaction of 4a either with cupreine catalyst 3g or Shibatomi's organocatalyst (see reference 13)
, Angew. Chem. Int. Ed, vol.44, p.6219, 2005.
Meldrum's Acid Derivatives as Platform for the Organocatalytic Synthesis of C3-Alkylated Dihydrocoumarins ,
, Adv. Synth. Catal. Year