专利号:WO-2025053792-A1 优先权日:2023-09-06 标题:Collective synthesis of phantomolin family through total synthesis of the sesquiterpene lactone molephantin 发明人:CHIBA SHUNSUKE; PATOURET REMI HENRI LOUIS; LI HOI YEUNG; LAI SOAK KUAN 权利人:UNIV NANYANG TECH 摘要:Disclosed herein are processes to generate an intermediate in the total synthesis of (+)- molephantin or a derivative thereof, and a total synthesis of (+)-molephantin or a derivative thereof. Also disclosed herein are methods of forming a compound of formula XIV and of forming a compound of formula XV, wherein compound of formula XIV and compound of formula XV are as defined in the description.
专利号:US-4749806-A 优先权日:1984-12-28 标题:Process for the synthesis of isocyanates and of isocyanate derivatives 发明人:TKATCHENKO IGOR; JAOUHARI RABIH; BONNET MICHEL; DAWKINS GORDON; LECOLIER SERGE 权利人:POUDRES & EXPLOSIFS STE NALE 摘要:The present invention relates to a process for the synthesis of isocyanates and of isocyanate derivatives. Isocyanates are obtained by reacting an organic halide with a metal cyanate in an organic medium in the presence of a catalyst consisting of a complex of nickel with at least one organic ligand, in which complex the nickel is in the zero oxidation state. A carbamate or a urea, respectively, are obtained by a subsequent reaction with a hydroxy compound or a primary or secondary amine. Isocyanates and their derivatives are used especially either as refined synthesis agents for the production of pesticides and medications, or as monomers or comonomers for the preparation of many macromolecular compounds.
专利号:US-9994508-B2 优先权日:2012-12-11 标 题:Versatile and functionalised intermediates for the synthesis of vitamin D and novel vitamin D derivatives 发明人:LOPEZ PEREZ BORJA; SIGUEIRO PONTE RITA; MAESTRO SAAVEDRA MIGUEL A; MOURINO MOSQUERA ANTONIO 权利人:ENDOTHERM GMBH 摘要:Novel intermediates for the complete synthesis of vitamin D are provided that allow a great versatility of functional groups in the final vitamin derivatives. Vitamin derivatives that are epimeric in position 3 and vitamin derivatives with a wide range of functionalities in position 18, including compounds with isotopic labelling are provided.
专利号:US-6635767-B2 优先权日:2000-05-23 标 题 :Synthesis of heteroarylamine intermediate compounds 发明人:SONG JINHUA J; YEE NATHAN K; KAPADIA SURESH R 权利人:BOEHRINGER INGELHEIM PHARMA 摘要:Disclosed are novel 2-(5-halopyridyl) and 2-(5-halopyrimidinyl) magnesium halides, processes of making and their use in the efficient synthesis in their respective 5-halo-2-substituted pyridines and pyrimidines.
专利号:US-6822093-B2 优先权日:2000-05-23 标题 :Synthesis of heteroarylamine intermediate compounds 发明人:SONG JINHUA J; YEE NATHAN K 权利人:BOEHRINGER INGELHEIM PHARMA 摘要:Disclosed are novel 2-(5-halopyridyl) and 2-(5-halopyrimidinyl) magnesium halides, processes of making and their use in the efficient synthesis in their respective 5-halo-2-substituted pyridines and pyrimidines.
专利号:US-8697902-B2 优先权日:2008-06-17 标 题:Preparation of nitriles from ethylenically unsaturated compounds 发明人:MASTROIANNI SERGIO 权利人:MASTROIANNI SERGIO; RHODIA OPERATIONS 摘要:A process for the hydrocyanation of a hydrocarbon-based compound having at least one site of ethylenic unsaturation into a nitrile compound includes reaction thereof, in a liquid medium, with hydrogen cyanide in the presence of a catalyst containing a metal element selected from among the transition metals and an organophosphorus ligand, wherein the organophosphorus ligand is a compound of formula (I): n n n n n n n n n n The subject process is particularly useful for the synthesis of adiponitrile from butadiene.