The purpose of the present invention is to provide: novel thiol compounds; a method for synthesizing said thiol compounds; curing agents containing said thiol compounds; resin compositions containing said thiol compounds and an epoxy compound; and resin compositions containing said thiol compounds and an ene compound having a carbon-carbon double bond in a molecule. Furthermore, the purpose of the present invention is to provide adhesives and sealants having these resin compositions as ingredients. The thiol compounds of the present invention are represented by chemical formula (I) to chemical formula (VII).

Disclosed is a method of synthesizing an -amino acid derivative, where an azirine compound, used as raw material, is reacted with a sulfhydryl compound in a mixed system of an organic solvent and a buffer solution under the protection of nitrogen to produce the -amino acid derivative. In the reaction, the carbon-nitrogen double bond of the azirine compound is attacked by the sulfhydryl compound, so that the azirine compound is directly opened to form the -amino acid derivative of which the same carbon atom is added with two molecules of the sulfhydryl compound. This method can be performed directly in an aqueous phase without using a metal catalyst.

Disclosed is a method of synthesizing an -amino acid derivative, where an azirine compound, used as raw material, is reacted with a sulfhydryl compound in a mixed system of an organic solvent and a buffer solution under the protection of nitrogen to produce the -amino acid derivative. In the reaction, the carbon-nitrogen double bond of the azirine compound is attacked by the sulfhydryl compound, so that the azirine compound is directly opened to form the -amino acid derivative of which the same carbon atom is added with two molecules of the sulfhydryl compound. This method can be performed directly in an aqueous phase without using a metal catalyst.

The invention relates to compounds of a new type which have a stabilizing effect and in particular provide stabilization with respect to oxidative thermal and/or actinic decomposition of or damage to organic materials. The compounds are represented by general formula I specified below. The invention further relates to a method for producing such compounds, to compositions containing said compound, to a method for stabilizing organic compounds by means of the stabilizing compounds, and to the use of the stabilizing compounds to stabilize organic materials.

The invention relates to compounds of a new type which have a stabilizing effect and in particular provide stabilization with respect to oxidative thermal and/or actinic decomposition of or damage to organic materials. The compounds are represented by general formula I specified below. The invention further relates to a method for producing such compounds, to compositions containing said compound, to a method for stabilizing organic compounds by means of the stabilizing compounds, and to the use of the stabilizing compounds to stabilize organic materials.

The present invention relates to a method for preparing 3-methylthiopropionaldehyde by reacting methyl mercaptan with acrolein, in which deviations in the stoichiometry of methyl mercaptan to acrolein in the reaction to give 3-methylthiopropionaldehyde are compensated for by supplying or by forming 1,3-bis(methylthio)-1-propanol, and also to the use of 1,3-bis(methylthio)-1-propanol as a storage form of methyl mercaptan and/or 3-methylthiopropionaldehyde.

The present invention relates to a method for preparing 3-methylthiopropionaldehyde by reacting methyl mercaptan with acrolein, in which deviations in the stoichiometry of methyl mercaptan to acrolein in the reaction to give 3-methylthiopropionaldehyde are compensated for by supplying or by forming 1,3-bis(methylthio)-1-propanol, and also to the use of 1,3-bis(methylthio)-1-propanol as a storage form of methyl mercaptan and/or 3-methylthiopropionaldehyde.

The present invention relates to a method for preparing 3-methylthiopropionaldehyde by reacting methyl mercaptan with acrolein, in which deviations in the stoichiometry of methyl mercaptan to acrolein in the reaction to give 3-methylthiopropionaldehyde are compensated for by supplying or by forming 1,3-bis(methylthio)-1-propanol, and also to the use of 1,3-bis(methylthio)-1-propanol as a storage form of methyl mercaptan and/or 3-methylthiopropionaldehyde.

A composite particle comprising a fluorescent core/shell nanoparticle and a perfluoroether ligand bound the surface thereof is described.

A composite particle comprising a fluorescent core/shell nanoparticle and a perfluoroether ligand bound the surface thereof is described.