Fused ring compound, method for producing the same, polymer, organic thin film containing the compound and/or polymer, and organic thin film device and organic thin film transistor each comprising the organic thin film

A polymer comprising a structural unit represented by the following formula (3):

• wherein R31 and R32 each independently represent a hydrogen atom, an alkyl group, an alkoxy group, an alkylthio group, an alkylamino group, an alkoxycarbonyl group having 3 or more carbon atoms in the alkyl moiety thereof, an aryl group that may have a substituent, a monovalent heterocyclic group that may have a substituent, or a cyano group, wherein at least one of R31 and R32 is not a hydrogen atom;
• R33 and R34 each independently represent a hydrogen atom or a monovalent group;
• Y31 and Y32 are each independently a divalent group represented by the following formula (4a), (4b), (4c), (4d), (4e), (4f), (4g) or (4h);
• and Y33 and Y34 are each independently a divalent group represented by the following formula (4a), (4b), (4c), (4d), (4e), (4f), (4g), (4h) or (4i):
• wherein R41, R42, R43 and R44 each independently represent a hydrogen atom or a monovalent group;
• and R43 and R44 may be bonded together to form a ring.

A method for producing a fused ring compound comprising making a compound represented by the following formula (8a) react with a compound expressed by the following formula (8b) in the presence of a base and a metal complex catalyst to obtain a fused ring compound represented by the following formula (8c):

• wherein X81 and X82 each independently represent a hydrogen atom or a halogen atom, wherein at least one of X81 and X82 is a halogen atom;
• R81 and R82 each independently represent a hydrogen atom, an alkyl group, an alkoxy group, an alkylthio group, an alkylamino group, an alkoxycarbonyl group having 3 or more carbon atoms in the alkyl moiety thereof, an aryl group that may have a substituent, a monovalent heterocyclic group that may have a substituent, or a cyano group, wherein at least one of R81 and R82 is not a hydrogen atom;
• R83 and R84 each independently represent a monovalent group and p and q are each independently an integer of 0 to 2, when there are a plurality of R83s and a plurality of R84s, the R83s may be the same as or different from each other and the R84s may be the same as or different from each other;
• Y81 and Y82 each independently represent a divalent group represented by the following formula (9a), (9b), (9c), (9d), (9e), (9f), (9g) or (9h);
• and Y83 and Y84 each independently represent a divalent group represented by the following formula (9a), (9b), (9c), (9d), (9e), (9f), (9g), (9h) or (9i):
• wherein R91, R92, R93 and R94 each independently represent a hydrogen atom or a monovalent group;
• and R93 and R94 may be bonded together to form a ring.