摘要:
Processes for producing a disubstituted oxalate are disclosed. The process includes contacting a mixture of cesium salt and gamma alumina with one or more alcohols and carbon dioxide (CO 2 ) under reaction conditions sufficient to produce a composition comprising a disubstituted oxalate.
摘要:
A process for producing lactic acid is provided. The process comprises (a) reacting a stream rich in saccharide with sodium hydroxide in the presence of water to produce a reaction mixture comprising sodium lactate; (b) reacting at least a portion of the sodium lactate with HCl to produce lactic acid and sodium chloride; (c) converting at least a portion of the sodium chloride to chlorine and sodium hydroxide; and (d) recycling at least a portion of the sodium hydroxide produced in step (c) to step (a). Also provided are processes for the production of alkyl lactate, oligomeric lactic acid, lactide, alkyl lactyllactate, poly-lactic acid, propylene glycol and acrylic acid.
摘要:
The use of betaine compounds of the formula R1-CO-NH-X-NR2R3)+- Y-COO- where R1denotes a linear or branched alkyl or alkenyl radical having 5 to 21 carbon atoms, R2 and R3 each independently denote C1- to C4-alkyl radicals, X denotes a hydrocarbon bridging element having 1 to 12 carbon atoms and Y denotes a linear or branched C1- to C4-alkylene group, as additives for fuels, especially as detergent additives for diesel fuels.
摘要:
본 발명은 (a) 글리세롤과 카르복실산을 포함하는 반응물로부터 알릴알코올을 포함하는 생성물을 제조하는 단계; (b) 상기 알릴알코올을 포함하는 생성물에, 불균일계 촉매와 염기성 용액을 투입한 후, 이를 산화시켜 3-하이드록시프로피온산 및 아크릴산을 포함하는 혼합물을 제조하는 단계; (c) 상기 3-하이드록시프로피온산 및 아크릴산 혼합물 중의 3-하이드록시프로피온산을 탈수 반응시켜 아크릴산을 제조하는 단계; 를 포함하는 글리세롤로부터 아크릴산을 제조하는 방법에 관한 것이다.
摘要:
The invention relates to new and improved processes for the preparation of Indacaterol and pharmaceutically acceptable salts thereof as well as intermediates for the preparation of Indacaterol. The new process avoids the use of the epoxide compound known in the art and the impurities associated therewith and results in a higher yield.
摘要:
This invention relates to deuterated tetramethyl dioic acids, compositions comprising them and uses thereof in the treatment of Metabolic Syndrome and any diseases, disorders or symptoms associated therewith.
摘要:
Processes include providing a clarified diammonium succinate (DAS)- or monoammonium succinate (MAS)- containing fermentation broth; distilling the broth of an overhead that includes water and ammonia, and a liquid bottoms that includes SA, and at least about 20 wt% water; cooling the bottoms to a temperature sufficient to cause the bottoms to separate into a liquid portion in contact with a solid portion that is substantially pure SA; separating the solid portion from the liquid portion; and converting the solid portion to produce nitrogen containing compounds such as diamine butane (DAB), succinic dinitrile (SDN), succinic amino nitrile (SAN) or succinamide (DAM) and downstream products.