Patent ID: 6596364
Filing Date: 2003-07-22
Classification: C07D,G11B,Y10T

Abstract:
A squarylium compound represented by the general formula (I): wherein, R1 represents a hydrogen atom, an alkyl group optionally having a substituent, an aryl group optionally having a substituent or a heterocyclic group optionally having a substituent; R2 represents a hydrogen atom, a halogen atom, an alkyl group optionally having a substituent, an alkoxy group optionally having a substituent, an aralkyl group optionally having a substituent, an aryl group optionally having a substituent, an amino group optionally having a substituent or a heterocyclic group optionally having a substituent; R3 and R4 are the same or different, and represent an alkyl group, or R3 and R4 may be taken together with an adjacent carbon atom to form an alicyclic hydrocarbon ring or a heterocycle; R5 represents a hydrogen atom, an alkyl group optionally having a substituent, an aralkyl group optionally having a substituent or an aryl group optionally having a substituent; R6 represents a halogen atom, an alkyl group optionally having a substituent, an aralkyl group, an aryl group, a nitro group, a cyano group or an alkoxy group; and n represents an integer of 0-4, and when n is 2-4, then R6s are the same or different, or two adjacent R6s may be taken together with two adjacent carbon atoms to form an aromatic ring optionally having a substituent.