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- W1567212994 abstract "Les différents produits obtenus dans l'action des composés organomagnésiens mixtes sur la coumarine résultent, soit d'une di-addition 1.2-1.2 sur la coumarine (alcools-phénols), soit d'une di-addition 1.2–1.4 (cétophénols), soit d'une monoaddition 1.4 (dihydrobenzopyrones). Les résultats obtenus soulignent l'importance de la nature de l'halogène engagé dans le réactif de Grignard. Un modèle théorique permet d'interpréter la réactivité de la coumarine vis-à-vis des réactifs de Grignard (RMgX) en fonction de R et de X. The various products obtained by the action of organomagnesium, compounds on coumarin result from 1.2-1.2 di-addition (phenolic alcohols) or 1.2–1.4 di-addition (ketophenols) or 1.4 mono-addition (dihydrobenzopyrones). The results show the importance of the nature of the halogen component of the Grignard reagent. A theoretical model allows regioselectivity of coumarine in relation to the group R and the halogene X to be evaluated." @default.
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- W1567212994 date "1976-01-01" @default.
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- W1567212994 title "Etude de la reactivite des coumarines—I" @default.
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- W1567212994 doi "https://doi.org/10.1016/0040-4020(76)85153-8" @default.
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