摘要:
Provided are new anionic surfactants and methods of their preparation and use. The surfactants are compounds of the formula I: wherein R, R1, R2, R3, R4, R5, and R6 are as defined herein.
摘要:
A process for making an amino acid by the steps of: (a) contacting a compound of formula I with a hydroformylation catalyst and synthesis gas to produce a mixture of aldehyde compounds comprising the formulas IIa, IIb and IIc; (b) reacting the mixture of aldehyde compounds from step (a) to produce a mixture of derivative compounds; (c) contacting the mixture of derivative compounds from step (b) with an enantioselective hydrolase enzyme in the presence of water to produce an L-amino acid having the formula IV; (d) isolating the amino acid having the formula IV in substantially pure form, wherein in formulas I, IIa, IIb, IIc, IIIa, IIIb, IIIc and IV, R is H, alkyl or aryl and R1 and R2 are the same or different alkyl groups and wherein R1 and R2 may be fused
摘要翻译:通过以下步骤制备氨基酸的方法:(a)使式I化合物与加氢甲酰化催化剂和合成气接触以产生包含式IIa,IIb和IIc的醛化合物的混合物; (b)使来自步骤(a)的醛化合物的混合物反应以产生衍生化合物的混合物; (c)在水存在下将来自步骤(b)的衍生化合物的混合物与对映选择性水解酶接触以产生具有式IV的L-氨基酸; (d)以基本上纯的形式分离具有式IV的氨基酸,其中在式I,IIa,IIb,IIc,IIIa,IIIb,IIIc和IV中,R是H,烷基或芳基和R 1, SO 2和R 2是相同或不同的烷基,其中R 1和R 2可以是稠合的
摘要:
An olefin metathesis process involving contacting an unsaturated fatty acid ester or unsaturated fatty acid, such as methyloleate or oleic acid, with a lower olefin, preferably ethylene, in the presence of a metathesis catalyst so as to prepare a first product olefin, preferably, a reduced chain α-olefin, such as methyl-9-decenoate or 9-decenoic acid, respectively. The metathesis catalyst contains ruthenium or osmium and a chelating ligand, preferably, a chelating ligand containing a carbene moiety and a second donor moiety of a Group 15 or 16 element Optionally, the catalyst can be supported on a catalyst support, such as, a cross-linked polymeric resin.