Abstract:
The present invention relates to a novel cyclic phosphinate derivative and a preparing method thereof, and more specifically the cyclic phosphinate derivative of the present invention comprises a benzooxaphosphole oxide derivative and a benzooxaphosphorine oxide derivative. The cyclic phosphinate derivative of the present invention has pharmacological activity and bioactivity, and can be used in novel drug development and synthesis of various pharmaceuticals as well as used as a basic structure of natural materials. In addition, the method for preparing the cyclic phosphinate derivative according to the present invention has strong points of preparing various cyclic phosphinate derivatives having high yield through a simple synthesizing process by conducting intramolecular carbon-oxygen coupling reaction of a phosphonic acid derivative with a palladium (Pd) catalyst, an oxidizing agent and a base.
Abstract:
The present invention provides a novel olefinated phosphachromone derivative compound and a method for producing the same. Moreover, the present invention provides a phosphachromone derivative compound having various structures and an effective method for producing the same, wherein the phosphachromone derivative compound is produced through a coupling reaction with olefin by activating a C-H bond in a desired position of a phosphachromone using a transition metal catalyst. Accordingly, the present invention can provide an olefinated phosphachromone derivative compound at a high yield, wherein reaction costs, reaction steps, and the use of time are very economical. The novel phosphachromone derivative compound of the present invention has physiological activities so that the same can be used as an important raw ingredient or intermediate which can be used for biomedical and pharmaceutical industries.
Abstract:
PURPOSE: A method for preparing a novel hydrofuran derivative is provided to simply obtain a hydrofuran derivative using a cheap copper catalyst. CONSTITUTION: A novel hydrofuran derivative contains a hydroisobenzo-furan derivative of chemical formula 1. In chemical formula 1, R^1 or R^2 is independently hydrogen, (C1-C6)alkyl group, (C1-C6)alkoxy, (C1-C6)alkoxycarbonyl, (C3-C20)cycloalkyl, (C6-C20)aryl, or (C3-C20)heteroaryl.
Abstract:
PURPOSE: A method for preparing 2-aryl allenoate derivatives is provided to obtain 2-aryl allenoate derivatives with high yield through a cross coupling reaction of an organic indium reagent in the presence of an arene derivative and palladium catalyst, wherein the organic indium reagent is obtained in in-situ from the reaction of indium with 4-bromo-2-butenoate. CONSTITUTION: A method for preparing 2-aryl allenoate derivatives is represented by chemical formula 1. In chemical formula 1, R^1 and R^5 are hydrogen, (C1~C7) alkyl, halogen, (C6~C20) aryl or (C1~C7) alkoxycarbonyl; R^2 and R^4 are hydrogen, (C1~C7) alkoxy or nitro; R^3 is hydrogen, (C1~C7) alkyl, (C6~C20) aryl, halogen, formyl, acetyl, alkoxycarbonyl or (C6~C20) aryl (C1~C7) alkylcarbamoyl aryl; R^6 is hydrogen or (C1~C7) alkyl; and R^7 is (C1~C7) alkyl or (C6~C20) aryl.