Process for preparing cyclopropane carboxylic acids...

C - Chemistry – Metallurgy – 07 – C

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260/518, 260/479

C07C 62/16 (2006.01) A01N 53/00 (2006.01) C07C 51/373 (2006.01) C07C 69/757 (2006.01) C07C 317/46 (2006.01)

Patent

CA 1181412

PRECIS DE LA DIVULGATION: Procédé de préparation des composés (I): Image (I) où Z représente -C02 R1, R1 étant un alcoyle (C1-C6), C02H ou CN, caractérisé principalement en ce que l'on fait réagir un composé (II): Image (II) où R est un alcoyle (C1-C6) ou -(CH2)2- ou -(CH2)3- avec une sulfone (III): (III) Image où Y est un reste aromatique, effectue un traitement aqueux, puis un traitement avec une base forte, hydrolyse la fonction cétal puis, si désiré, traite avec une base faible pour obtenir un dérivé I de configuration trans.

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