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-4140708-A 优先权日:1975-10-16 标 题 :Asymmetric synthesis of optically active prostaglandins 发明人:CHADHA NARESH K; PARTRIDGE JR JOHN J; USKOKOVIC MILAN R 权利人:HOFFMANN LA ROCHE 摘要:An asymmetric synthesis of optically active prostaglandin F 2 α from cyclopentadiene including intermediates in this synthesis.
专利号:US-3933892-A 优先权日:1973-02-12 标题 :Asymmetric synthesis of optically active prostaglandins 发明人:CHADHA NARESH KUMAR; PARTRIDGE JR JOHN JOSEPH; USKOKOVIC MILAN RADOJE 权利人:HOFFMANN LA ROCHE 摘要:An asymmetric synthesis of optically active prostaglandin F 2 .sub.α from cyclopentadiene including intermediates in this synthesis.
专利号:US-5696290-A 优先权日:1994-09-12 标 题:Synthesis of penta-substituted guanidines 发明人:RUETTIMANN KENNETH W; MCGHEE WILLIAM D; SOLODAR A JOHN 权利人:MONSANTO CO 摘要:The present invention is the novel synthesis of sterically hindered penta-substituted guanidines by a process in which (1a) an isocyanate is reacted first with a di-substituted amine or (1b) a urea is reacted with two moles of a mono-substituted amine to form a tri-substituted urea followed by (2) treatment of the tri-substituted urea with an activating agent before reacting with a second di-substituted amine in the presence of a base.
专利号:US-2009306400-A1 优先权日:2006-03-27 标 题:Convergent process for the synthesis of taxane derivatives. 发明人:HENRI JOHN T; MCCHESNEY JAMES D; VENKATARAMAN SYLESH K; LAMB RODGER L; FOSTER JONATHAN E; SUMNER CHRISTIAN M; YE SHANGPING 权利人:HENRI JOHN T; MCCHESNEY JAMES D; VENKATARAMAN SYLESH K; LAMB RODGER L; FOSTER JONATHAN E; SUMNER CHRISTIAN M; YE SHANGPING 摘要:The present invention is broadly directed to novel compounds useful for the synthesis of biologically active compounds, including taxane derivatives, and convergent processes for the preparation of these taxane derivatives and their intermediates.
专利号:US-9428524-B2 优先权日:2010-05-25 标 题:Synthetic process for the manufacture of ecteinascidin compounds 发明人:MARTIN LÓPEZ MA JESÚS; FRANCESCH SOLLOSO ANDRÉS; CUEVAS MARCHANTE MARIA DEL CARMEN 权利人:MARTIN LÓPEZ MA JESÚS; FRANCESCH SOLLOSO ANDRÉS; CUEVAS MARCHANTE MARIA DEL CARMEN; PHARMA MAR SA 摘要:This invention relates to compounds of formula II: wherein R 1 , R 2 , Prot SH , and Prot NH are as defined, to processes for the synthesis of ecteinascidins of formula I from compounds of formula II, and to processes for the synthesis of compounds of formula II.