A salt represented by formula (I):
in which X represents an oxygen atom, a sulfur atom or —N(SO2R5)—;
R5 represents a C1-C12 alkyl group which can have a fluorine atom and in which a methylene group can be replaced by an oxygen atom or a carbonyl group, a C3-C12 cycloalkyl group which can have a fluorine atom, or a C6-C12 aromatic hydrocarbon group which can have a fluorine atom;
Ar represents a C6-C36 aromatic hydrocarbon group which can have a substituent or a C4-C36 heteroaromatic hydrocarbon group which can have a substituent;
R1 and R2 each independently represent a hydrogen atom, a hydroxy group, or a C1-C12 hydrocarbon group in which a methylene group can be replaced by an oxygen atom or a carbonyl group;
“m” and “n” each independently represent 1 or 2;
R3 and R4 each independently represent a hydrogen atom or a C1-C12 hydrocarbon group, R3 and R4 may be bonded to form a ring, or R3 or R4 may form a ring together with Ar; and
A− represents an organic anion which has an acid-labile group, an organic anion which has a base-labile group, or an organic anion which has an acid-labile group and a base-labile group.
式 (I) 所代表的盐:
其中 X 代表氧原子、
硫原子或-N(SO2R5)-;
R5 代表可含有
氟原子的 C1-C12 烷基,其中亚甲基可被氧原子或羰基取代;代表可含有
氟原子的 C3-C12 环烷基;或代表可含有
氟原子的 C6-C12
芳烃基;
Ar 代表可带有取代基的 C6-C36
芳烃基团或可带有取代基的 C4-C36 杂
芳烃基团;
R1和R2各自独立地代表氢原子、羟基或C1-C12烃基,其中亚甲基可被氧原子或羰基取代;
m "和 "n "各自独立地代表 1 或 2;
R3 和 R4 各自独立地代表一个氢原子或一个 C1-C12 烃基,R3 和 R4 可以键合形成一个环,或者 R3 或 R4 可以与 Ar 一起形成一个环;以及
A- 代表具有憎酸基团的有机阴离子、具有憎碱基团的有机阴离子或具有憎酸基团和憎碱基团的有机阴离子。