Patent ID: 8900796

Claim:
An acid generator generating a sulfonic acid represented by the following general formula (1) in response to high-energy beam or heat, wherein R represents a group represented by the following general formula (1-1), and A represents a hydrogen atom or a trifluoromethyl group, (R 1 )(R 2 )N-L- (1-1) wherein each of R 1 and R 2 independently represents a hydrogen atom or a monovalent hydrocarbon group having 1 to 20 carbon atoms optionally substituted by a heteroatom, or R 1 and R 2 may be bonded to form a ring together with the nitrogen atom in the general formula (1-1), and L represents a divalent hydrocarbon group having 1 to 20 carbon atoms optionally substituted by a heteroatom, with the proviso that any one of R 1 , R 2 , and L contains a benzene ring.