Patent ID: 11919834
Assignee: SOLVAY SPECIALTY POLYMERS ITALY S.P.A.
Field: Organic fine chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 9:
10. The method of claim 8, wherein G″ is a halogen selected from F, Cl, Br, I, and wherein Step (c) comprises at least one step selected from the group consisting of:
a step (C-4) of nucleophilic substitution, by reaction of a compound of formula (IV) with:
(j) an alkali hydroxide, so as to obtain a compound of formula (I) with G and G′ being-OH;
(jj) a CN-containing compound, leading to the corresponding CN-substituted compound of formula (I), which (jj-1) is optionally hydrolysed to provide for compounds of formula (I), wherein G and G′ are groups of formula —COY, or (jj-2) is optionally reacted with an ortho-amino-phenol derivative of formula, so as to provide for compounds of formula (I) wherein G and G′ are groups of formula, with Xz being —NH2; —NO2; —OH, —Xoo, —C(O)X# with X# being —OH, or being —Xoo; with Xoo being a halogen selected from F, Cl, Br, I;
(jjj) an alkali (alkyl)amide, leading to compounds of formula (I) wherein G and G′ are groups of formula —NRH1RH2;
a step (C-5) of reaction of the compound of formula (IV) with Mg or Li, to form corresponding organo-magnesium or organo-lithium compounds of formula (I) wherein G and G′ are groups of formula —MgXMg or —Li, with XMg being a halogen, which are optionally further reacted for generating a compound of formula (I) wherein G and G′ are groups of formula -E-Ar—X′, with X″ being hydrogen or halogen.