Patent ID: 7834213

Claim:
A method of manufacturing a sulfonylhalide compound having a structure represented by general formula (4), comprising a step of causing a colorant compound represented by general formula (3) and a thionyl halide to react with each other in the presence of N,N-dimethylformamide and an organic solvent: wherein each of R 1 through R 4 independently denotes a hydrogen atom, an alkyl group that may be substituted, an aryl group that may be substituted or an aralkyl group that may be substituted, each of R 5 and R 6 independently denotes a hydrogen atom or an alkyl group, R 7 denotes a hydrogen atom, a sulfonic acid group, an amino group that may be substituted or —SO 3 M; n denotes an integer between 1 and 3; at least one of the R 1 through R 4 is an alkylene group, an arylene group or an aralkylene group having —SO 3 M as a substituent if R 7 is not —SO 3 M; and M denotes a counter cation of a sulfonic group, wherein each of R 1 through R 4 independently denotes a hydrogen atom, an alkyl group that may be substituted, an aryl group that may be substituted or an aralkyl group that may be substituted, each of R 5 and R 6 independently denotes a hydrogen atom or an alkyl group, R 7 denotes a hydrogen atom, a sulfonic acid group, an amino group that may be substituted or —SO 3 X; n denotes an integer between 1 and 3; at least one of the R 1 through R 4 is an alkylene group, an arylene group or an aralkylene group having —SO 3 X as a substituent if R 7 is not —SO 3 X; and X denotes a halogen atom.