PROCEDURE FOR THE PREPARATION OF 4,4'-DICETO-ß-CAROTENE DERIVATIVES
Номер патента: PE20030389A1
Опубликовано: 13-06-2003
Автор(ы): Danuta A Schloemer, George C Schloemer, Jeffery L Davis
Принадлежит: DSM IP ASSETS BV
Опубликовано: 13-06-2003
Автор(ы): Danuta A Schloemer, George C Schloemer, Jeffery L Davis
Принадлежит: DSM IP ASSETS BV
Реферат: QUE COMPRENDE: 1)CONTACTAR EL ß-CAROTENO O UN DERIVADO DE ß-CAROTENO, TAL COMO ZEAXANTINA Y ASTAXANTINA, EN UN SOLVENTE ORGANICO, TAL COMO CLOROFORMO O CLORURO DE METILENO, CON UNA SOLUCION DE UN AGENTE OXIDANTE, DONDE DICHO AGENTE OXIDANTE ES FORMADO POR LA MEZCLA DE SOLUCIONES ACUOSAS ACIDIFICADAS DE SALES DE SULFITO DE SODIO O POTASIO, SULFITO DE HIDROGENO O SOLUCIONES DE BISULFITO Y SOLUCIONES DE BROMATO DE POTASIO O SODIO EN AGUA PARA PRODUCIR PRODUCTOS DERIVADOS 4,4'-DICETO WHAT IT INCLUDES: 1) CONTACTING THE ß-CAROTENE OR A ß-CAROTENE DERIVATIVE, SUCH AS ZEAXANTIN AND ASTAXANTHINE, IN AN ORGANIC SOLVENT, SUCH AS CHLOROFORM OR METHYLENE CHLORIDE, WITH A SOLUTION OF AN OXIDIZING AGENT, WHERE OXIDIZING AGENT IS. FORMED BY THE MIXTURE OF ACIDIFIED AQUEOUS SOLUTIONS OF SODIUM OR POTASSIUM SULPHITE SALTS, HYDROGEN SULPHITE OR BISULPHITE SOLUTIONS AND POTASSIUM OR SODIUM BROMATE SOLUTIONS IN WATER TO PRODUCE 4,4'-DIVETED PRODUCTS.
Method for the metal-free preparation of a biaryl by a photosplicing reaction and their uses
Номер патента: US20200339529A1. Автор: Florian Kloss,Christian Hertweck,Toni Neuwirth,Veit Haensch. Владелец: Leibniz Lnstitut fur Naturstoff Forschung und Infektionsbiologie EVHans Knoll Lnstitut Hki. Дата публикации: 2020-10-29.