摘要:
A near-infrared ray absorbent resin composition, comprising 100 parts by weight of a clear resin and a reaction mixture of 0.01 to 10 parts by weight of tungsten hexachloride, based on 100 parts by weight of said clear resin, and at least 0.1 mol of at least one member selected from the group consisting of phosphoric esters and phosphorous esters per mol of said tungsten hexachloride, and a method for production thereof.
摘要:
A process for producing geranylgeraniol is provided, which comprises the steps of subjecting a mixture of at least one ester derivative wherein one or more carbon-carbon double bonds in the molecule are in cis form represented by the general formula (1): wherein R represents an aromatic group which can be substituted with at least one substituent, or a higher aliphatic group having from 7 to 25 carbon atoms, and wavy lines, respectively, represent a state where each carbon-carbon double bond can be present in cis or trans form, and an ester derivative of the general formula (2): wherein R is as defined above, to crystallization to obtain the ester derivative of the formula (2) selectively, and hydrolyzing the thus obtained ester derivative.
摘要:
A process for producing geranylgeraniol is provided, which comprises the steps of subjecting a mixture of at least one ester derivative wherein one or more carbon-carbon double bonds in the molecule are in cis form represented by the general formula (1):
wherein R represents an aromatic group which can be substituted with at least one substituent, or a higher aliphatic group having from 7 to 25 carbon atoms, and wavy lines, respectively, represent a state where each carbon-carbon double bond can be present in cis or trans form, and an ester derivative of the general formula (2):
wherein R is as defined above, to crystallization to obtain the ester derivative of the formula (2) selectively, and hydrolyzing the thus obtained ester derivative.
摘要:
The present invention provides a process for producing 2-methyl-1,4-naphthoquinone characterized by reaction between 2-methylnaphthalene and hydrogen peroxide and/or an organic peracid in a solvent comprising a carboxylic acid in the presence of a palladium compound and sulfuric acid.