The present disclosure provides methods for producing N-(fluorosulfonyl)azoles, sulfonyldiazoles, or related derivatives thereof, and the related products including N-(fluorosulfonyl)azoles, sulfonyldiazoles, and related derivatives thereof. For example, an N-(fluorosulfonyl)azole is obtained by reaction of sulfuryl fluoride with an azoles, an azolate salt, an N-silylazole, or a combination thereof. Symmetric and asymmetric sulfonyldiazoles are obtained by further reaction of such an N-(fluorosulfonyl)azole with azoles, azolate salts, or N-silylazoles. A sulfonyldiazole can be also produced by reacting sulfuryl fluoride with an azole, an N-silylazole, or a combination thereof in one pot.

A compound represented by formula (I) or formula (II) has a pest control effect. (In the formulae, Q.sup.1 represents a pyrazine ring or the like; G.sup.1 represents a nitrogen atom or a carbon atom; X.sup.1 represents an alkyl group or the like; m represents the number of X.sup.1 moieties; A represents an oxygen atom or the like; Y represents a single bond or the like; Q.sup.2 represents a benzene ring or the like; X.sup.2 represents an alkyl group, an aryl group or the like; X.sup.3 represents a halogeno group or the like; n represents the number of X.sup.3 moieties; Z.sup.q- represents a counter ion; and q represents 1 or 2.)

##STR00001##

A compound represented by formula (I) or formula (II) has a pest control effect. (In the formulae, Q.sup.1 represents a pyrazine ring or the like; G.sup.1 represents a nitrogen atom or a carbon atom; X.sup.1 represents an alkyl group or the like; m represents the number of X.sup.1 moieties; A represents an oxygen atom or the like; Y represents a single bond or the like; Q.sup.2 represents a benzene ring or the like; X.sup.2 represents an alkyl group, an aryl group or the like; X.sup.3 represents a halogeno group or the like; n represents the number of X.sup.3 moieties; Z.sup.q- represents a counter ion; and q represents 1 or 2.)

##STR00001##

Compounds of formula (I) and its pharmaceutically acceptable salts are described ##STR00001##
wherein R.sub.1, R.sub.2, X, Y, A, B are as defined in the specification. Also disclosed are methods for preparing the compounds of formula (I) or pharmaceutically acceptable salts thereof, and pharmaceutical compositions comprising the compounds of formula (I) or pharmaceutically acceptable salts thereof.

Compounds of formula (I) and its pharmaceutically acceptable salts are described ##STR00001##
wherein R.sub.1, R.sub.2, X, Y, A, B are as defined in the specification. Also disclosed are methods for preparing the compounds of formula (I) or pharmaceutically acceptable salts thereof, and pharmaceutical compositions comprising the compounds of formula (I) or pharmaceutically acceptable salts thereof.

The present invention relates to a fluorescently-tagged (co)polymer and use thereof useful as a scale inhibitor in industrial water systems. Said (co)polymer comprises a (i) reactive fluorescent compound selected from a benzodiazole compound (ii) at least one monoethylenically unsaturated acid monomer, and (iii) optionally, at least one monoethylenically unsaturated acid-free monomer.

The present invention relates to a fluorescently-tagged (co)polymer and use thereof useful as a scale inhibitor in industrial water systems. Said (co)polymer comprises a (i) reactive fluorescent compound selected from a benzodiazole compound (ii) at least one monoethylenically unsaturated acid monomer, and (iii) optionally, at least one monoethylenically unsaturated acid-free monomer.

Small molecule AhR ligands are disclosed. The ligands can induce the differentiation of Tr1 cells to suppress pathogenic immune responses without inducing nonspecific immune suppression. Methods of treatment of autoimmune diseases using the AhR ligands are also disclosed.

The present disclosure provides a method for photocleavage of an amide bond, the method has mild reaction conditions and can realize the cleavage of amide bonds by using light. The method comprises the following steps: subjecting 2,4-dinitrofluorobenzene to a reaction with an amino group of a substance represented by structural formula I with an α-amino acid at the end to produce a compound 1 represented by structural formula II; then under light irradiation, subjecting the compound 1 to a cleavage reaction of amide bond;

##STR00001##

Wherein, R1 is the side chain group of α-amino acid; R2 is: aryl, aliphatic hydrocarbon, —CH(R)—COOH or polypeptide.

The present disclosure provides a method for photocleavage of an amide bond, the method has mild reaction conditions and can realize the cleavage of amide bonds by using light. The method comprises the following steps: subjecting 2,4-dinitrofluorobenzene to a reaction with an amino group of a substance represented by structural formula I with an α-amino acid at the end to produce a compound 1 represented by structural formula II; then under light irradiation, subjecting the compound 1 to a cleavage reaction of amide bond;

##STR00001##

Wherein, R1 is the side chain group of α-amino acid; R2 is: aryl, aliphatic hydrocarbon, —CH(R)—COOH or polypeptide.