CAS: 10361-29-2; Ammonium Carbonate(X:1)

上下游产品

carbon dioxide ammonia urea water1,3-diazaspiro[4.7]dodecane-2,4-dione {1-[3-(2,5-Dioxo-imidazolidin-4-yl)-propyl]-cyclohexyl}-acetonitrile 5-isobutyl-imidazolidine-2,4-dione 25H37NO4SiC25H37NO4Si

专利信息

专利号:WO-2025035571-A1
优先权日:2023-08-15
标 题 :Process for recycling waste residue from synthesis of hexachlorocyclotriphosphazene
发明人：LONG ZHI; WANG QIUWEI; LIN PING; YAN ZHIWEI; YE JUN
权利人:ZHEJIANG WANSHENG CO LTD
摘要:Provided is a process for recycling waste residue from the synthesis of hexachlorocyclotriphosphazene. The process comprises: reacting waste residue separated out after a synthesis reaction of hexachlorocyclotriphosphazene is finished with an ammonia source, the ammonia source being liquid ammonia, ammonia gas, ammonia water, ammonium bicarbonate, ammonium carbonate or a combination thereof; adjusting the pH value at an end point to 6-10; subjecting the obtained reaction product to solid-liquid separation so as to obtain a filtrate and a filter cake; subjecting the filter cake to post-treatment so as to obtain a recovered metal chloride catalyst; extracting the filtrate by using chlorobenzene, i.e. an extracting agent, so as to obtain an extract phase and a raffinate phase; rectifying the extract phase to obtain chlorobenzene and recovered pyridine or pyridine derivatives; and dehydrating the raffinate phase to obtain recovered ammonium chloride. By means of the process, high-degree recycling and regeneration of waste residue from the synthesis of hexachlorocyclotriphosphazene are achieved, the recovery rate of pyridine or pyridine derivatives from the waste residue can reach 95-99% or higher, the recovery rate of ammonium chloride and the metal chloride catalyst can reach 98% or higher, and no new waste residue is generated throughout the whole process.

专利号:WO-2014095657-A1
优先权日:2012-12-20
标题:Synthesis of a viral protease inhibitor intermediate
发明人：RIVA SERGIO; ALLEGRINI PIETRO; ATTOLINO EMANUELE; GRAZIOSI RENZO
权利人:DIPHARMA FRANCIS SRL
摘要:Synthesis of an intermediate useful in the synthesis of a viral protease inhibitor, and its use in the preparation of said inhibitor.

专利号:US-6022984-A
优先权日:1998-07-27
标 题:Efficient synthesis of furan sulfonamide compounds useful in the synthesis of new IL-1 inhibitors
发明人：URBAN FRANK J; JASYS VYTAUTAS J
权利人:PFIZER
摘要:An efficent synthesis of furan sulfonamide compounds of formula ##STR1## comprising reacting a compound of formula 11 with a Grignard reagent in a reaction inert solvent, wherein R' is (C 1 -C 6 )alkyl. The compound of formula II is prepared by reacting a compound of formula III with a compound of formula IV wherein R' is (C 1 -C 6 )alkyl with a chorinating reagent and an acid scaverger in an inert solvent. The invention also includes a novel compound of the formula ##STR2## wherein R' is (C 1 -C 6 )alkyl and Q is halo, hydroxy or amino.

专利号:US-6063919-A
优先权日:1998-08-14
标题:Process for the synthesis of exochelins
发明人：GAUDIOSO LARRY A; WEGLARZ MICHAEL A
权利人:KEYSTONE BIOMEDICAL INC
摘要:A process for the synthesis of an Exochelin comprising the steps of generating L-N-[(2-benzyloxy-(benzoyl)] serine or L-N-[2-benzyloxy (benzoyl)] threonine, creating L-N-t-Boc- epsilon -hydroxynorleucine and reacting same to produce L-N-Boc- epsilon -bromonorleucine trimethylsilylethyl ester, providing a dicarboxylic acid and forming an O-benzyl methyl hydroxamate from the dicarboxylic acid, coupling the O-benzyl methyl hydroxamate with the L-N-Boc- epsilon -bromonorleucine trimethylsilylethyl ester to give an L-N2-Boc-N6-methyl,N6-(benzyloxy) lysine 2-trimethylsilylethyl ester which incorporates the dicarboxylic acid as modified above, removing the N-tert-butoxycarbonyl protecting group from the L-N2-Boc-N6-methyl, N6-(benzyloxy) lysine 2-trimethylsilylethyl ester to yield a substituted lysine, and coupling the same with the L-N-[2-benzyloxy (benzoyl) serine or -threonine to yield a 2-trimethyl silylethyl ester of dibenzyl Exochelic acid, transforming the 2-trimethyl silylethyl ester of dibenzyl Exochelic acid to dibenzyl Exochelic acid, preparing benzyl epi-cobactin, forming an ester bond between the dibenzyl Exochelic acid and benzyl epi-cobactin to form an intermediate, and, hydrogenolytically removing three benzyl groups from said intermediate, resulting in the synthesized Exochelin. More particularly, a synthesis for Exochelin 786SM (R) is disclosed wherein the dicarboxylic acid is suberic acid and the serine form is utilized.

专利号:US-2024101506-A1
优先权日:2021-01-26
标 题 :Continuous process for the synthesis of dimethyl carbonate over a cerium-based catalyst formulation
发明人：SRINIVAS DARBHA; BOKADE VIJAY VASANT; NIPHADKAR PRASHANT SURESH; PULIKKEEL UNNIKRISHNAN; PARMAR SNEHALKUMAR; AMTE VINAY; SENGUPTA SURAJIT; DAS ASIT KUMAR
权利人:COUNCIL SCIENT IND RES
摘要:The present invention discloses a continuous process for the synthesis of dimethyl carbonate from methanol and carbon dioxide over a ceria-based mixed metal oxide-silica catalyst formulation in the presence of a dehydrating or water trapping compound (2-Cyanopyridine).

专利号:US-2023174567-A1
优先权日:2020-05-22
标题:Synthesis of fluorinated nucleotides
发明人：ARMIGER TRAVIS; BELYK KEVIN M; BENKOVICS TAMAS; CHUNG CHEOL K; JI CHEN YINING; JOHNSON HEATHER CLAIRE; KLAPARS ARTIS; LIU ZHIJIAN; LIU ZHUQING; MOORE JEFFREY C; NEEL ANDREW J; PENG FENG; RUMMELT STEPHAN M; SALEHI MARZUARANI NASTARAN; SHERRY BENJAMIN D; SONG ZHIGUO JAKE; TURNBULL BEN WILLIAM HULME; WANG LU; XU FENG
权利人:MERCK SHARP & DOHME LLC
摘要:The present invention relates to efficient processes useful in the preparation of fluorinated nucleosides, such as (2S,3R,4S,5R)-5-(2-amino-6-oxo-1,6-dihydro-9H-purin-9-yl)-3-fluoro-4-hydroxy-2-(mercaptomethyl)tetrahydrofuran-3-yl dihydrogen phosphate, also known as 3′-fluoro-thio-guanosine monophosphate or 3′-F-thio-GMP. Such fluorinated nucleosides may be useful as a biologically active compound and or as an intermediate for the synthesis of more complex biologically active compounds. The present invention also encompasses intermediates useful in the disclosed synthetic processes and the methods of their preparation. (I)