Abstract:
The present invention relates to a method for preparing an unsaturated aldehyde compound, and to a method for preparing an unsaturated aldehyde compound, which, in the presence of a sulfonic acid compound and dichloroethane solvent, by including a step of reacting propargyl alcohol, a reaction step is very simple as compared with the prior art; has no by-product; and has high purity.
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 bichromene or biquinoline derivative and a method for preparing the same are provided to synthesize derivatives of high purity with high yield. CONSTITUTION: A method for preparing a compound of chemical formula 1 comprises a step of cyclizing a compound of chemical formula 3 under the presence of a gold catalyst, a silver catalyst, or a mixture thereof. The gold catalyst includes AuCl, AuCl_, Ph_PAuCl, (C_6F_5)_3PAuCl, (4-CF_3-C_6H_4)_3PAuCl, IMesAuCl(IMes : 1,3-bis(2,4,6-trimethylphenyl)imidazol-2- ylidene), IPrAuCl(IPr : 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene), or Au(JohnPhos)Cl(JohnPhos : (2-biphenyl)di-tert-butylphosphine). The silver catalyst is AgOTf, AgNTf_2, AgSbF_6, AgAsF_6, AgBF_4, or AgNO_3. The cyclization is performed in a solvent of dichloromethane(DCM), dichloroethane(DCE), toluene, acetonitrile, nitromethane, tetrahydrofurane(THF), N,N-dimethylformamide(DMF), or N,N-dimethyl acetamide(DMA).
Abstract:
PURPOSE: A 3-arylbutenolide derivative and a method for preparing the same are provided to develop a novel drug and various medicines. CONSTITUTION: A 3-arylbutenolide derivative is denoted by chemical formula 1. A method for preparing the 3-arylbutenolide derivative comprises a step of performing intramolecular cyclization of 2-aryl allenoate derivative of chemical formula 2 under the presence of gold(Au) catalyst and acid. The gold catalyst is monovalent AuBr, AuCl, or PPh_3AuCl, or trivalent AuBr_3 or AuCl_3. The acid is CF_3CO_2H, CH_3CO_2H, CF_3SO_3H.
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.
Abstract:
본 발명은 알릴 유도체와 인듐으로부터 제조되는 알릴 인듐 화합물과 아릴 브로마이드 또는 트리플루오로메탄술포네이트와의 교차-짝지음 반응을 통해서 효과적으로 하기 화학식 1로 표시되는 알릴벤젠 유도체를 제조하는 방법에 관한 것이다.
상기 화학식 1에서, A는 CR 4 또는 N을 나타내며; R 1 , R 2 , R 3 , R 4 또는 R 5 는 서로 독립적으로 수소, C 1 -C 5 의 알킬, C 1 -C 5 의 알콕시, C 1 -C 5 의 알킬카르보닐, C 1 -C 5 의 알콕시카르보닐, C 1 -C 5 의 아마이드, 벤질 아마이드 또는 니트릴을 나타내거나, R 1 과 R 2 또는 R 2 와 R 3 가 서로 연결되어 벤젠고리를 형성할 수 있으며; R 6 , R 7 또는 R 8 은 서로 독립적으로 수소, C 1 -C 5 의 알킬기 또는 C 1 -C 5 의 알콕시기를 나타낸다. 알릴 치환체, 알릴인듐, 교차-짝지움 반응, 인듐
Abstract:
A method for manufacturing an aromatic multicyclic compound is provided to synthesize the aromatic multicyclic compound with excellent yield by intersection-pairing reaction with various electrophilic aromatic compounds by in-situ reaction. An aromatic multicyclic compound has a naphthyl group represented by chemical formula 1. In chemical formula 1, A is an aromatic multicyclic group selected from 1,1'-biphenyl, 4- iodo-1,1'-biphenyl, 4-bromo-1,1'-biphenyl, 9,10-anthracenyl, fluorenyl, 9,9'-dimethylfluorenyl, carbazolyl, 9-ethylcarbazolyl, 2,2'-bithiophenyl, 9,9'-spirobifluorenyl and 1-pyrenyl.
Abstract:
본 발명은 고리 화합물의 제조방법에 관한 것으로, 더욱 상세하게는 프로파질 말로네이트 화합물, α,β-불포화 케톤 화합물 및 트리알킬실릴 트리플레이트 화합물을 반응시켜 중간체로서 알키닐 실릴 엔올이서 유도체를 합성한 후에, 합성된 알키닐 실릴 엔올이서 유도체를 금(Au), 은(Ag) 또는 이들의 혼합금속이 함유된 금속화합물 촉매하에서 분자내 고리화 반응하여 하기 화학식 1로 표시되는 고리 화합물을 제조하는 방법에 관한 것이다.
상기 화학식 1에서, , X, Y, R, R 1 , R 2 , 및 m은 각각 발명의 상세한 설명에서 정의한 바와 같다. 알키닐 실릴 엔올이서, 트리페닐포스핀골드클로라이드(Ph3PAuCl), 실버트리플레이트(AgOTf), 프로파질 브로마이드, 고리화 반응, α,β-불포화케톤