High-shrinkage fibres based on the co-polyesters of dimethyl terephthalate and dimethyl-5-hydroxyisophthalate

High Yield Synthesis of Filicinic Acid,

High Yield Synthesis of Filicinic Acid, Based on the Polychlorination of 4,4-Dimethyl-2-Cyclohexenone Part II: Conversion of 2,3,5,6-tetrachloro-4,4-dimethyl-2,5-cyclohexadienone into filicinic acid and related cyclohexadienones

✍ L. De Buyck; N. De Kimpe; R. Verhé; N. Schamp 📂 Article 📅 2010 🏛 Wiley (John Wiley & Sons) ⚖ 309 KB 👁 2 views

## Abstract Filicinic acid (5) was prepared in 75‐80% overall yield from 4,4‐dimethyl‐2‐cyclohexenone (1). The key intermediate, tetrachlorodienone 2, underwent facile substitution of both β‐chlorine substituents by methoxide affording the bis enol ether 3 which was converted into dichlorofilicinic