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00925njm 22002777a 4500 dc Guevara Pulido, James Oswaldo author Andrés García, José María author Ávila, Deisy P. author Pedrosa Sáez, Rafael author 2016 Unprecedented diastereo- and enantioselective synthesis of seven-membered rings has been achieved by organocatalyzed intramolecular Michael addition of enals bearing β-diketone functionality. The cyclization leads to 2,3-disubstituted cycloheptanone derivatives in high yield and excellent stereoselectivity. The same organocatalyzed cyclization process has been used to prepare six-membered homologs, but with lower stereoselectivity. RSC Advances, 2016, 6, p. 30166-30169 http://uvadoc.uva.es/handle/10324/21452 10.1039/C6RA04198A 30166 6 30169 RSC Advances Química orgánica Enantioselective Synthesis of Seven-Membered Carbo- and Heterocyles by Organocatalyzed Intramolecular Michael Addition