Setembro 2013 vol. 1 num. 1 - Brazilian Meeting on Organic Synthesis 2011

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Improved procedure for the a-Arylation of chromanones by O-Protected ortho-Bromophenols

Domingos, Jorge L. O. ; Alonso, Diego ; Nájera, Carmem ; Costa, Paulo R. R. ;

Abstract:

In recent years some procedures for the a-arylation of ketones appeared in the literature, allowing the formation of secondary, tertiary and even quaternary centers. However, only few examples on the use of ortho-substituted arylhalides have been described. As part of a project aiming the synthesis of isoflavonoids, we report herein a study on the α- arylation of chromanone 1a and deoxi-chromanone 1b by ortho-bromophenol derivatives 2a-c.

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Palavras-chave: a-arylations, Pd2(dba)3, palladacycles,

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DOI: 10.5151/chempro-14bmos-R0093-1

Referências bibliográficas
  • [1] 1 Bellina, F., Rossi, R., Eur. J.Org. Chem. 2010, 1339 and references cited.
  • [2] 2 Botella, L.; Nájera, C., J. Org. Chem.. 2005, 70, 4360.
Como citar:

Domingos, Jorge L. O.; Alonso, Diego; Nájera, Carmem; Costa, Paulo R. R.; "Improved procedure for the a-Arylation of chromanones by O-Protected ortho-Bromophenols", p. 93 . In: In Blucher Chemistry Proceedings, São Paulo, v. 1, n. 1, Setembro.2013. São Paulo: Blucher, 2013.
ISSN 2318-4043, DOI 10.5151/chempro-14bmos-R0093-1

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