摘要:
The present invention provides a method for obtaining an alcohol compound from an ester compound with high purity and by easy operation. The high-purity alcohol compound can be obtained by a method comprising passing a solution containing an ester compound and methanol and/or ethanol through a column packed with an anion exchange resin having methoxide and/or ethoxide as a counter anion to generate a methyl ester and/or ethyl ester, and distilling off the methyl ester and/or ethyl ester together with the methanol and/or ethanol.
摘要:
The purpose of the present invention is to further enhance a product yield when a phosgene alternative reagent is used in a flow reactor. A process for producing an organic compound using a flow reactor for a first reaction in which a raw material liquid A and a raw material liquid B are mixed, and reacted in a reactor unit, and a flow reactor for a second reaction in which a first reaction solution discharged from the flow reactor for the first reaction and a raw material liquid C are mixed, and reacted in a reactor unit, wherein the raw material liquid A is a solution in which triphosgene and/or diphosgene is dissolved, wherein the raw material liquid B is a nitrogen-containing organic compound or a solution of the nitrogen-containing organic compound, wherein the raw material liquid C is a reaction substrate having functional group capable of reacting with phosgene, the functional group being selected from the group consisting of an amino group, an amido group, and -OC(=O)NH 2 , or a solution containing the reaction substrate, and wherein a product of the first reaction is phosgene.
摘要:
The present invention provides methods respectively for producing a 2,4,6-tris(2-hydroxy-3-methyl-4-alkoxyphenyl)-1,3,5-triazine compound and 2,4,6-tris(2,4-dihydroxy-3-methylphenyl)-1,3,5-triazine, both of which are improved in yield and quality. The methods according to the present invention are characterized in that a reaction of 2,4,6-tris(2,4-dihydroxy-3-methylphenyl)-1,3,5-triazine with an alkylating agent is carried out using a base in the presence of an alcohol or water, and are also characterized in that an ester compound is used as an additive in a reaction of cyanuric chloride with 2-methylresorcinol.
摘要:
A tri-carbobenzoxy-arginine represented by the following formula (2):
is produced by carbobenzoxylating the arginine or arginine derivative (1) represented by the following formula (1), or a salt thereof:
by adding carbobenzoxy chloride and a base in a water/organic solvent bilayer system to an arginine or arginine derivative (1) represented by the formula (1), or a salt thereof.