Abstract:
Liquid deodorants appropriate for deodorizing space and fiber products and hair cosmetics and skin cosmetics having high deodorizing effects. These hair cosmetics and skin cosmetics may be those called body deodorants. Namely, deodorants containing deodorizable organic dibasic acids comprising organic dibasic acids and/or salts thereof which show a difference between a first acid dissociation index and a second acid dissociation index at 25 DEG C of at least 1.7.
Abstract:
A process for producing isochroman compounds which comprises the step of adding a 40 to 70 % by weight aqueous solution of formaldehyde to a Friedel-Crafts catalyst complex of an arylalkanol represented by general formula (II) to thereby cyclize the arylalkanol, wherein R1 and R2 represent each hydrogen, lower alkyl or lower alkoxy, or R1 and R2 are bonded respectively to the adjacent carbon atoms and to each other to thereby form together with the carbon atoms to which they are bonded a benzene or naphthalene ring or a C5-6 cycloalkane or cycloalkene optionally having lower (C1-6) alkyl; and R3 represents hydrogen or lower alkyl. The process can be effected simply and economically and gives the isochroman compounds with a high purity.
Abstract:
Liquid deodorants appropriate for deodorizing space and fiber products and hair cosmetics and skin cosmetics having high deodorizing effects. These hair cosmetics and skin cosmetics may be those called body deodorants. Namely, deodorants containing deodorizable organic dibasic acids comprising organic dibasic acids and/or salts thereof which show a difference between a first acid dissociation index and a second acid dissociation index at 25 DEG C of at least 1.7.
Abstract:
A process for efficiently producing unsaturated alcohols from alpha , beta -unsaturated aldehydes. The process comprises selectively reducing the aldehyde group of an alpha , beta -unsaturated aldehyde with an aluminum alcoholate in the presence of a primary or s econdary alcohol bearing two to eight carbon atoms to give an unsaturated alcohol represented by general formula (III), and is characterized by carrying out the reaction in the presence of a proton acid wherein R represents an alkyl group bearing one to three carbon atoms.
Abstract:
Un proceso para producir un 5-arilpentanol de fórmula (2): (Ver fórmula) en donde, R 1 representa un grupo arilo que puede estar sustituido con uno o dos o más de un grupo alquilo o alcoxi y tiene de 6 a 12 átomos de carbono en total, R 3 representa un átomo de hidrógeno, o un grupo alquilo o alquenilo de 1 a 6 átomos de carbono, y R 4 representa R 2 definido posteriormente cuando R 2 es un grupo monovalente o representa R 2 H cuando R 2 es un grupo divalente, que comprende efectuar la hidrogenolisis de un compuesto de pirano de fórmula (1): (Ver fórmula) en donde, R 1 y R 3 son como se han definido anteriormente, R 2 representa un átomo de hidrógeno, un grupo alquilo o alquenilo de 1 a 6 átomos de carbono, o un grupo alquilideno o alquenilideno de 1 a 6 átomos de carbono, y la línea de puntos representa un enlace posible y cualquiera de los tres enlaces representados por líneas de puntos y líneas sólidas es un doble enlace, en presencia de uno o más catalizadores seleccionados de (a) un catalizador que lleva dos o más elementos seleccionados de metales nobles en el Grupo VIII en la tabla periódica y (b) un catalizador de tipo ácido que soporta paladio.