Authors: Debnath, Pradip; Maji, Pradip K.; Majumdar, Krishna C.

Source: Canadian Journal of Chemistry, Volume 86, Number 8, August 2008 , pp. 846-854(9)

Publisher: NRC Research Press

Abstract:

The n-Bu₃SnH-AIBN mediated aryl radical cyclization of various 8-[(2-bromophenoxy)methyl]-1,3-dimethyl-2,3,4,6-tetrahydro-1H-pyrano[3,2-d]pyrimidine-2,4-diones and 1-[(2-bromophenoxy)methyl]-3,5-dihydropyrano[2,3-c]coumarins was investigated with the formation of [6,6]-fused oxygen heterocycles as a single regioisomer.Key words: n-Bu₃SnH-AIBN, aryl radical cyclization, 6-endo-trig, oxygen heterocycles, coumarin derivatives, pyrimidine derivatives.

On a effectué une étude le la régiochimie de la cyclisation arylique radicalaire catalysée par le n-Bu₃Sn-AIBN de diverses 8-[2-bromophénoxy]méthyl-1,3-diméthyl-2,3,4,6-tétrahydro-1H-pyrano[3,2-d]pyrimidine-2,4-diones et de 1-[(2-bromophénoxy) méthyl]-3,5-dihydropyrano[2,3-c]coumarines qui conduit à la formation d'hétérocycles oxygénés à fusion [6,6] sous la forme d'un seul régioisomère.Mots-clés : n-Bu₃Sn-AIBN, cyclisation arylique radicalaire, 6-endo-trig, hétérocycles oxygénés, dérivés de la coumarine, dérivés de la pyrimidine.[Traduit par la Rédaction]

Document Type: Research article

Publication date: 2008-08-01

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