Abstract:
키랄성 알파 하이드록시 싸이오에스터 화합물의 제조방법이 개시된다. 키랄성 알파 하이드록시 싸이오에스터 화합물을 제조하기 위하여 키랄 촉매 화합물 및 알칼리금속 불화물의 존재 하에 알파 옥소 알데히드 화합물과 싸이올 화합물을 입체 선택적으로 반응시킬 수 있고, 이 경우 키랄 촉매 화합물로는 염기 부분인 올리고 에틸렌 글라이콜 작용기와 산성 부분인 바이놀 유도체의 하이드록시 작용기를 포함하는 올리고 에틸렌 글라이콜이 유도체화된 화합물을 사용할 수 있다.
Abstract:
감마 나이트로 다이싸이오에스터 유도체 화합물(γ-nitro dithioester compound)의 합성 방법이 개시된다. 감마 나이트로 다이싸이오에스터 유도체 화합물은 물 또는 무기염 수용액 내에서 염기를 포함하는 촉매의 존재 하에 베타 위치에 두 개의 탄소 함유 치환기를 가지는 나이트로 알킨 화합물(β,β-Disubstituted nitroalkene compound)과 다이싸이오말로네이트 화합물(dithiomalonate compound)을 마이클 반응(Michael reaction)시켜 합성될 수 있고, 합성된 감마 나이트로 다이싸이오에스터 유도체 화합물은 베타 위치에 두 개의 탄소 함유 치환기를 가진다.
Abstract:
감마 나이트로 다이싸이오에스터 화합물(γ-nitro dithioester compound)의 합성 방법이 개시된다. 감마 나이트로 다이싸이오에스터 화합물은 물 또는 무기염 수용액 내에서 염기를 포함하는 촉매의 존재 하에 베타 위치에 두 개의 탄소 함유 치환기를 가지는 나이트로 알킨 화합물(β,β-Disubstituted nitroalkene compound)과 다이싸이오말로네이트 화합물(dithiomalonate compound)을 마이클 반응(Michael reaction)시켜 합성될 수 있고, 합성된 감마 나이트로 다이싸이오에스터 화합물은 베타 위치에 두 개의 탄소 함유 치환기를 가진다.
Abstract:
PURPOSE: A manufacturing method of chiral A-aminonitrile is provided to efficiently and economically provide a large amount of chiral A-aminonitrile of high optical purity through stereoselective strecker reaction with imine or amidosulfone, which is a precursor thereof, and cyanide ion source which contains little toxicity and is easily handled. CONSTITUTION: A manufacturing method of chiral A-aminonitrile comprises a step of conducting a strecker reaction by using cyanide supply source under the presence of a catalyst indicated in chemical formula 1 or chemical formula 2. The cyanide supply source is selected form alkali metal cyanide, alkali metal cyanide and alkali metal salt of acid indicated in chemical formula 6, and alkali metal cyanide and sufinic acid indicated in chemical formula 7. In the chemical formulas, R is halogen, n is 1-5, M is an alkali metal, Ar1 is a C6-12 aryl group and Ar2 is a C6-12 aryl group.
Abstract:
PURPOSE: A manufacturing method of chiral gamma-nitrothioester is provided to obtain chiral gamma-nitrothioester of various structures with high selectivity of enantiomer in a mild condition through catalytic enantioselective michael addition reactions. CONSTITUTION: A manufacturing method of chiral gamma-nitrothioester represented by chemical formula 22 comprises a step of conducting asymmetrical Michael addition reaction of nitro alkene indicated in chemical formula 20 and malonic acid half thioester indicated in chemical formula 21. In the chemical formulas, R1, R2, R3 and R4 is respectively hydrogen, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl, a substituted or unsubstituted aryl, or a substituted or unsubstituted heteroaryl, where R1, R2 and R3 cannot be simultaneously hydrogen, R5 is a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted aryl group or a substituted or unsubstituted heteroaryl group. [Reference numerals] (AA) Chemical formula 20; (BB) Chemical formula 21; (CC) Chemical formula 22; (DD) No chirality; (EE) Chirality
Abstract:
PURPOSE: A fabricating method of an organic fluoro compound with the high yield, and a manufacturing method of a nucleophilic displacement product are provided to improve the speed of the displacement reaction using a bi-functional compound as a solvent. CONSTITUTION: A manufacturing method of a nucleophilic displacement product comprises a step of reacting alkyl halide or alkyl sulfonate, with metal salt or ammonium salt inside an organic solvent. The organic solvent is a bi-functional compound marked with chemical formula 1. In the chemical formula 1, R1, R2, and R3 are hydrogen or a C1~C10 alkyl group. The metal salt is selected from the group consisting of lithium salt, sodium salt, potassium salt, rubidium, and cesium salt.
Abstract:
본 발명은 신규 플러렌 유도체 및 그의 제조 방법에 관한 것이다. 본 발명의 플러렌 유도체는 양이온성의 플러렌과 상대음이온으로 구성되어 있는 구조로 온화한 반응 조건에서 빠르고 간단하게 합성될 수 있으며, 용해도가 높고 안정할 뿐만 아니라 넓은 용매 범위를 갖는다. 또한, 대기 중의 산소나 습기와 반응하지 않아 안정할 뿐만 아니라 기계적 및 전기적 특성에 결정적 영향을 주는 구조적 변형이 거의 없다. 나아가, 본 발명의 플러렌 유도체의 음이온은 간단한 방법에 의해 다른 음이온으로 교환이 가능하며, 플러렌의 용해가 요구되는 용매의 종류에 따라 자유로운 용해성질 변환이 가능하다.
Abstract:
PURPOSE: A novel fullerene derivative and a method of preparing thereof are provided to simply synthesized the fullerene derivative in a mild reaction condition, and to prevent a constructive deformation without reacting with oxygen and a moisture among the atmosphere. CONSTITUTION: A novel fullerene derivative is marked as Q-C]^+[MXx]^-. In the formula, Q refers to fullerene. C refers to {(CH_2)lO}mH or CHhWvXn. W refers to a alkyl group or a aryl group. M refers to 13~15 group elements. X is a halogen element. L is an integer of 2~6. M is a fixed number of 1~50. H, V, and N is a fixed number of 0~3, respectively. The sum of H, V, and N is 3. A small letter x refers to a fixed number of 4 or 6. Q is selected from a group consisting of grapheme, a carbon nano tube, fullerite, torus, a nanobud, a nanoflower or buckyballs.
Abstract:
PURPOSE: A method for preparing chiral hemiesters through asymmetric ring opening reaction of meso-cyclic anhydrides is provided to ensure high value of industrial use and to reuse it by a basic acid-base distillation method. CONSTITUTION: A method for preparing chiral hemiesters through asymmetric ring opening reaction of meso-cyclic anhydrides comprises a step for reacting meso-cyclic anhydride with alcohol by using organic catalysts represented by chemical formula 1 or chemical formula 2 in the presence of an organic solvent. In the formulae, X is O or S and R is ethyl or vinyl. The chemical formula 1 has dihydro quinine or quinine as a starting material. The chemical formula 2 has dihydro quinine or quinine as a starting material.