Provided is a novel method whereby an amide compound can be produced by highly stereoselectively and efficiently performing amidation between a plurality of amino acids and/or peptides. A compound of general formula (3) is synthesized by forming an amide bond between the carboxyl group on the right side of general formula (1) in a compound represented thereby and the amino group on the left side of general formula (2) in a compound represented thereby, in the presence of a Lewis acid catalyst and a silylating agent [in formulae (1), (2) and (3), each symbol has the same meaning as defined in claims]. ##STR00001##

Provided is a novel method whereby an amide compound can be produced by highly stereoselectively and efficiently performing amidation between a plurality of amino acids and/or peptides. A compound of general formula (3) is synthesized by forming an amide bond between the carboxyl group on the right side of general formula (1) in a compound represented thereby and the amino group on the left side of general formula (2) in a compound represented thereby, in the presence of a Lewis acid catalyst and a silylating agent [in formulae (1), (2) and (3), each symbol has the same meaning as defined in claims]. ##STR00001##

The invention relates to a method for preparing keto-functionalized aromatic (meth)acrylates.

The invention relates to a method for preparing keto-functionalized aromatic (meth)acrylates.

The invention relates to a method for preparing keto-functionalized aromatic (meth)acrylates.

Provided are processes for the preparation of (S)-tert-butyl 4,5-diamino-5-oxopentanoate, or a salt, solvate, hydrate, enantiomer, mixture of enantiomers, or isotopologue thereof. Also provided are solid forms of various intermediates and products obtained from the processes.

Provided are processes for the preparation of (S)-tert-butyl 4,5-diamino-5-oxopentanoate, or a salt, solvate, hydrate, enantiomer, mixture of enantiomers, or isotopologue thereof. Also provided are solid forms of various intermediates and products obtained from the processes.

Compositions that include cationic surfactants and methods of synthesizing compositions that include cationic surfactants. The surfactants include a quaternary amine and a saturated or unsaturated alkyl chain with 4 to 28 carbons. The surfactants can be generated by reacting a fatty acid modified with an amino alkyl group and an epihalohydrin in the presence of a base. The cationic surfactants can be generated by reacting a fatty acid modified with an amino alkyl group, an epihalohydrin, and a carboxylic acid. The cationic surfactants can be generated by reacting a carboxylic acid, an epihalohydrin, and a catalyst to afford a halo-substituted alkyl ester, followed by reacting the halo-substituted alky ester with a fatty acid modified with an amino alkyl group.

Compositions that include cationic surfactants and methods of synthesizing compositions that include cationic surfactants. The surfactants include a quaternary amine and a saturated or unsaturated alkyl chain with 4 to 28 carbons. The surfactants can be generated by reacting a fatty acid modified with an amino alkyl group and an epihalohydrin in the presence of a base. The cationic surfactants can be generated by reacting a fatty acid modified with an amino alkyl group, an epihalohydrin, and a carboxylic acid. The cationic surfactants can be generated by reacting a carboxylic acid, an epihalohydrin, and a catalyst to afford a halo-substituted alkyl ester, followed by reacting the halo-substituted alky ester with a fatty acid modified with an amino alkyl group.

The present invention relates to a derivative compound in which a biphenyl group is introduced into an aminoalkanoic acid, a stereoisomer thereof, or a pharmaceutically acceptable salt thereof. The compound of the present invention exhibits excellent antifungal and fungicidal effects. Furthermore, the compound of the present invention exhibits a synergistic effect when used in combination with a conventional antifungal agent. Furthermore, the compound of the present invention provides broad-spectrum antifungal activity against a wide range of fungal pathogens. Therefore, the compound of the present invention may be widely used in fields requiring treatment with antifungal or fungicidal agents against human pathogenic fungi and animal pathogenic fungi, and phytopathogenic fungi.