Patent ID: 11914296
Assignee: MERCK PATENT GMBH
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC G  C | IPC C  G

Claim 2:
3. The synthesis method according to claim 1; where the group derived from ethynyl to replace hydroxyl is represented by below formula;, wherein R1 is each independently hydrogen, halogen, cyano, unsubstituted C1-6 alkyl, C1-6 alkyl substituted with at least one substituent selected from the group consisting of C1-6 alkyl, halogen and cyano, unsubstituted C3-20 aromatic ring, or C3-20 aromatic ring substituted with at least one substituent selected from the group consisting of C1-6 alkyl, halogen and cyano;
R2 and R3 are each independently hydrogen, halogen, cyano, unsubstituted C1-6 alkyl, C1-6 alkyl substituted with at least one substituent selected from the group consisting of C1-6 alkyl, halogen and cyano, unsubstituted C3-20 aromatic ring, or C3-2u aromatic ring substituted with at least one substituent selected from the group consisting of C1-6 alkyl, halogen and cyano.