A surface modified electrode and a method of preparing the surface modified electrode are provided. The surface modified electrode includes a glassy carbon electrode and a coating of a compound of formula I disposed on the glassy carbon electrode. The present disclosure also relates to a method of preparing the surface modified electrode. The method includes depositing a slurry of the compound of Formula I on the glassy carbon electrode to form a film and coating a polymer matrix on the film to obtain the surface modified electrode. The present disclosure also relates to a method of preparing the compound of Formula I. The method includes condensing 4-bromobenzaldehyde (4-BBD) and 4-methyl-benzenesulphonylhydrazine (4-MBSH), to obtain a first mixture and precipitating the first mixture to obtain the compound of Formula I. The surface modified electrode is used in an electrochemical sensor for the detection of metal ions. ##STR00001##

A surface modified electrode and a method of preparing the surface modified electrode are provided. The surface modified electrode includes a glassy carbon electrode and a coating of a compound of formula I disposed on the glassy carbon electrode. The present disclosure also relates to a method of preparing the surface modified electrode. The method includes depositing a slurry of the compound of Formula I on the glassy carbon electrode to form a film and coating a polymer matrix on the film to obtain the surface modified electrode. The present disclosure also relates to a method of preparing the compound of Formula I. The method includes condensing 4-bromobenzaldehyde (4-BBD) and 4-methyl-benzenesulphonylhydrazine (4-MBSH), to obtain a first mixture and precipitating the first mixture to obtain the compound of Formula I. The surface modified electrode is used in an electrochemical sensor for the detection of metal ions. ##STR00001##

The present invention provides a sulfonium salt photoinitiator, a preparation method therefor, a photocurable composition comprising sulfonium salt photoinitiator, and use thereof. The sulfonium salt photoinitiator has a structure represented by formula (I). By modifying the structure of an existing sulfonium salt photoinitiator, a sulfonium salt photoinitiator having a new structure is obtained, which can exhibits a higher photosensitivity and an excellent as well as characteristics of low odor and low toxicity, when being used in a photocurable composition. This is significantly superior to existing similar photoinitiators. ##STR00001##

The present invention provides a sulfonium salt photoinitiator, a preparation method therefor, a photocurable composition comprising sulfonium salt photoinitiator, and use thereof. The sulfonium salt photoinitiator has a structure represented by formula (I). By modifying the structure of an existing sulfonium salt photoinitiator, a sulfonium salt photoinitiator having a new structure is obtained, which can exhibits a higher photosensitivity and an excellent as well as characteristics of low odor and low toxicity, when being used in a photocurable composition. This is significantly superior to existing similar photoinitiators. ##STR00001##

Disclosed herein is a method of forming a compound of formula I: ##STR00001##
wherein the substituents are defined in the specification. In particular, the compounds of formula I can be converted to amino acids bearing quaternary stereocenters with exceptional optical purities.

Disclosed herein is a method of forming a compound of formula I: ##STR00001##
wherein the substituents are defined in the specification. In particular, the compounds of formula I can be converted to amino acids bearing quaternary stereocenters with exceptional optical purities.

The invention relates to a method for producing a fluorine- and sulphur-bearing compound of formula F—SO—R (I) or F—SO.sub.2—R (II), comprising the reaction, in the presence of water, of at least one salt providing a fluoride anion and at least one halgoenosulfoxide compound of formula X—SO—R′ (I0) from a halogenosulfonyl compound of formula X—SO.sub.2—R′ (II0), in which X is a halogen atom other than fluorine and R and R′ are each a group linked by a covalent bond to the sulphur atom, said bond linking the sulphur atom with a nitrogen atom. The invention also relates to a method for producing salts of a fluorine- and sulphur-bearing compound of formula F—SO—R (I) or F—SO.sub.2—R (II) which are advantageously used as electrolyte salts, as precursors of antistatic agents or as surfactant precursors.

The invention relates to a method for producing a fluorine- and sulphur-bearing compound of formula F—SO—R (I) or F—SO.sub.2—R (II), comprising the reaction, in the presence of water, of at least one salt providing a fluoride anion and at least one halgoenosulfoxide compound of formula X—SO—R′ (I0) from a halogenosulfonyl compound of formula X—SO.sub.2—R′ (II0), in which X is a halogen atom other than fluorine and R and R′ are each a group linked by a covalent bond to the sulphur atom, said bond linking the sulphur atom with a nitrogen atom. The invention also relates to a method for producing salts of a fluorine- and sulphur-bearing compound of formula F—SO—R (I) or F—SO.sub.2—R (II) which are advantageously used as electrolyte salts, as precursors of antistatic agents or as surfactant precursors.

Provided is a method for producing an optically active substance, the method including an asymmetric induction, wherein an asymmetry inducer is allowed to act on a chiral molecule having a half-life of enantiomeric excess of shorter than 10 hours, thereby increasing abundance of one enantiomer of the chiral molecule. According to this method, one enantiomer of a chiral molecule that is susceptible to racemization can be selectively and efficiently obtained.

Provided is a method for producing an optically active substance, the method including an asymmetric induction, wherein an asymmetry inducer is allowed to act on a chiral molecule having a half-life of enantiomeric excess of shorter than 10 hours, thereby increasing abundance of one enantiomer of the chiral molecule. According to this method, one enantiomer of a chiral molecule that is susceptible to racemization can be selectively and efficiently obtained.