Abstract:
PURPOSE: A novel cyclic compound and a manufacturing method are provided to use as a good precursor in natural material synthesis or medicinal or pharmaceutical filed. CONSTITUTION: A cyclic compound is denoted by the chemical formula 1a. In the chemical formula 1a, D1-X1 is CX1 or CX1X2; D2-X2 is oxygen(O), CX1X2, or CX2; A is H or straight or branched C1-C10 alkyl; and R1 and R2 are same or different H, straight or branched C1-C10 alkyl or phenyl.
Abstract:
A method for preparing an allyl allene derivative is provided to synthesize an allyl allene derivative at good yield by reacting an allyl indium reagent with a propargyl alcohol derivative without a separate refining process. A method for preparing an allyl allene derivative has a structure of chemical formula 1. In the chemical formula 1, R1 and R2 show C1-C6 alkyl group, or substituted or unsubstituted phenyl group, or R1 and R2 form 5-8-membered cycloalkyl ring; R3 and R4 show hydrogen atom, C1-C6 alkyl group, substituted or unsubstituted phenyl group, or phenyl-C1-C6 alkylene group. The substituted phenyl group is a phenyl group substituted with substituents selected from halide, hydroxyl, C1-C6 alkyl, C1-C6 alkoxy, ketone, ester, nitro, amide, aldehyde and amine.
Abstract:
A method for preparing a homoallenyl alcohol derivative is provided to selectively synthesize the homoallenyl alcohol derivative at high yield by reacting a synthesized organic indium reagent and an aldehyde compound. A method for preparing a homoallenyl alcohol derivative represented by chemical formula 1 comprises the steps of: reacting indium and propargyl chloride substituted with an ester group represented by chemical formula 2 to prepare an organic indium reagent; and adding an aldehyde compound represented by chemical formula 4. In chemical formula 1, 2 and 3, X is a halogen atom; R1 is a C1-C6 alkyl group; and R2 is a hydrogen atom, C1-C6 alkyl group, C3-C8 cycloalkyl group, phenyl group or phenyl-C1-C6 alkylene group. The benzene ring of phenyl or phenyl-C1-C6 alkylene group can be substituted or unsubstituted with 1-4 substituents selected from halogen, hydroxyl, nitro, C1-C6 alkyl, C1-C6 alkoxy, C1-C6 acyl and C1-C6 alkoxycarbonyl.
Abstract:
A method for manufacturing a dihydrofuran derivative using a gold catalyst is provided to manufacture the dihydrofuran derivative with high yield under the presence of gold (Au) catalyst through cyclization of allenine-1,6-diol derivative. A dihydrofuran derivative of the chemical formula 1 is produced by cyclization of allenine-1,6-diol derivative of the chemical formula 2 under the presence of gold (Ag). In the chemical formula 1, A and B is hydrogen atom; C1-C6 alkyl group, C5-C8 cycloalkyl group; and phenyl group substituted with halogen, nitro, C1-C6 alkoxy, C2-C6 alkylcarbonyl, C2-C6 alkoxycarbonyl or C2-C6 alkanoate or non-substituted; phenyl-C1-C6 alkylene group; or 5-8 angular heterocyclic group containing oxygen. The gold (Au) catalyst is a compound containing Au^+ or Au^3+. The gold (Au) catalyst is used as 0.01-0.5 equivalent weight range to the allenine-1,6-diol derivative of the chemical formula 3.
Abstract:
A method for manufacturing sulfide compound is provided to synthesize a sulfide compound with good yield, to obtain quantitative yield even if an indium triorganothiolate reagent is used in only equivalent, and to produce by-products. A method for manufacturing sulfide compound using indium triorganothiolate comprises the steps of: inducing R^1 and R from electronphile represented by formula 3: R^1-Xm and indium triorganothiolate represented by formula 2: In(SR)3; and preparing a sulfide compound represented by formula 1: R^1(SR)n by using a transition metal. R^1 of chemical formula 1 is induced from R^1 of chemical formula 3 and is phenyl, an aromatic compound having C1-6 linear or branched alkyl group, an aromatic compound having C1-6 linear or branched alkoxy group, and an aromatic compound having halide, ester, nitro, aldehyde, ketone, cyanide, amide and carboxylic acid.