Abstract:
The present invention relates to a production method of a ketone compound which includes a step of making an alkyne compound react under the presence of an iron catalyst and a sulfonic acid based compound, thereby simplifying a reaction step compare to existing production methods, removing the generation of byproducts, and allowing the production of the ketone compound with high purity and high yield.
Abstract:
PURPOSE: A pyrazole derivative and a method for preparing the same are provided to be used as an important intermediate, and to synthesize a precision chemistry intermediate including agrochemicals. CONSTITUTION: A method for preparing a pyrazole derivative of chemical formula 1 comprises: a step of intramolecular cyclizing hydrazinecarboxylate derivatives of chemical formula 7 under the presence of TfOH, AuCl, AuCl_3, AuBr_3, Ph_3PAuCl, (C_6F_5)_3PAuCl, (4-CF_3-C_6H_4)_3PAuCl, (IPr)AuCl [IPr = N,N`-bis(2,6-diisopropylphenyl) imidazol-2-ylidine], (IMes)AuCl [IMes = N,N`-bis(2,4,6-trimethylphenyl) imidazol-2-ylidene], (IMes)AuCl [IMes = N,N`-bis(2,4,6-trimethylphenyl) imidazol-2-ylidene], AgNTf_2, AgOTf, AgSbF_6, AgAsF_6, AgPF_6 AgBF_4, AgNO_3, or AgClO_4 catalyst to prepare a 1,2-dihydro-pyrazol-3-one derivative of chemical formula 6; a step of reacting the derivative of chemical formula 6 with N-phenylbis(trifluoro methane sulfominide)(PhNTf_2) under the presence of a base to prepare a pyrazole triflate derivative of chemical formula 2; and a step of reacting the derivative of chemical formula 2 with an boronic acid derivative of chemical formula 3, a terminal alkyne derivative of chemical formula 4, or an organotin compound of chemical formula 5 under the presence of a palladium catalyst.
Abstract:
본 발명은 하기 화학식 1로 표시되는 새로운 쿠마린 유도체 및 이의 제조방법에 관한 것이다.
본 발명에 따른 쿠마린 유도체 제조방법은 산 존재 하에 알레노에이트 화합물과, 알콕시벤젠, 알콕시벤젠 유도체, 디히드록시벤젠, 디히드록시벤젠 유도체로부터 선택되는 1종 이상 화합물을 반응시켜 높은 수율로 쿠마린 유도체를 제조할 수 있는 장점이 있다. 트리플루오로메탄설폰산, 에틸 알레노에이트, 다이메톡시벤젠, 다이메톡시벤젠 유도체, 트라이메톡시벤젠, 트라이메톡시벤젠 유도체, 다이하이드록시벤젠, 다이하이드록시벤젠 유도체, 트리하이드록벤젠, 트리하이드록벤젠 유도체, 쿠마린 유도체
Abstract:
PURPOSE: A method for preparing dihydrofuran derivative is provided to selectively prepare dihydrofuran derivative with high yield by a simple test. CONSTITUTION: A dihydrofuran derivative of chemical formula 1 is prepared by intramolecular cyclization of alenyl alcohol derivative of chemical formula 2 under the presence of a cupper salt catalyst of CuCl, CuBr, CuI, CuOTf, Cu(OTf)2, CuCl2, CuBr2, CuI_2, or Cu(OAc)_2, or solvent of N,N-dimethylformamide(DMF), or N,N-dimethylaceteamide(DMA). The organic solvent is dichloromethane(DCM), dichloroethane(DCE), toluene, acetonitrile(MeCN), nitromethane, tetrahydrofuran(THF), N,N-dimehtylformamide(DMF), or N,N-dimethylaceteamide(DMA).
Abstract:
본 발명은 유기 황-인듐 착물을 이용한 신규의 알레닐 설파이드 유도체와 이의 제조방법에 관한 것으로서, 더욱 상세하게는 본 발명은 싸이올 (thiol)의 친핵성을 증가시키기 위해 새로운 형태의 반응 시약인 인듐 트라이(오가노싸이올레이트)와 삼차 프로파질 아세테이트가 교차-짝지움 반응을 하여 제조된 하기 화학식 1로 표시되는 신규의 알레닐 설파이드 유도체와 이의 제조방법에 관한 것이다. [화학식 1]
상기 화학식 1에서, R 1 , R 2 , R 3 , R 4 는 각각 발명의 상세한 설명에서 정의한 바와 같다. 알레닐 설파이드, 프로파질 아세테이트, 인듐 트라이(오가노싸이올레이트), 팔라듐, 교차-짝지움 반응
Abstract:
PURPOSE: A method for manufacturing a novel furan using organic sulfur-indium complex is provided to use as a raw ingredient for manufacturing medicinal, agricultural, and natural materials. CONSTITUTION: A furan derivative is denoted by chemical formula 1. A method for preparing the furan derivative comprises: a step of performing cross-pairing reaction and intramolecular cyclization of indium tri(organothiolate) of chemical formula 3 with propazyl acetate derivative of chemical formula 2 under the presence of palladium catalyst and phosphine ligand. The palladium catalyst is Pd_2dba_3CHCl_3, Pd(OAc)_2, (dppf)PdCl_2, Pd(PPh_3)_4, (PPh_3)_2PdCl_2, (DPEphos)PdCl_2, or PdCl_2. The phosphine ligand is bis(2-diphenylphosphynophenyl)ether, 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene, cyclohexyl diphenyl phosphine, 1-1'-bis(diphenylphosphino)ferrocene, 1,2-bis(diphenylphosphino)ether, 1,3-bis(diphenylphosphino)propane, or triphenylphospane.
Abstract:
PURPOSE: A method for preparing 1,3-butadiene-2-1-methyl amine derivatives is provided to synthesize a 1,3-butadiene-2-1-methyl amine derivative compound without separation of an imine compound formed through condensation reaction an aldehyde derivative and amine derivative. CONSTITUTION: A 1,3-butadiene-2-1-methyl amine derivative has a structure represented by chemical formula 1. In the chemical formula 1, A is (C1-C10) alkyl, (C3-C9) cyclo alkyl, (C6-C12) aryl, (C1-C10) alkoxycarbonyl, or (C3-C7) heteroaryl; B is (C6-C12) aryl, (C6-C12) ar (C1-C10) alkyl or (C6-C12) ar (C1-C10) alkoxy; and alkyl, cycloalkyl, aryl, alkoxycarbonyl, heteroaryl, aralkyl or aralkoxy of A and B can be substituted with at least one selected from (C1-C10) alkyl, (C1-C10) alkoxy, halogen or hydroxyl.