摘要:
A metal organic framework comprising zinc (II) ions and second metal ions, such as iron (II) ions, cobalt (II) ions, and copper (II) ions as nodes or clusters and coordinated 1,3,5-benzenetricarboxylic acid struts or linkers between them forming a porous coordination network in the form of polyhedral crystals that are isostructural to HKUST-1. Transmetallation processes for producing the metal organic frameworks, as well as methods for applications of the metal organic frameworks as catalysts, specifically catalysts for the oxidation of cyclic hydrocarbons, such as toluene, cyclohexane, and methylcyclohexane.
摘要:
A gold/titanium nanotube-multiwalled carbon nanotube composite (Au/TNT-MWCNT) is presented. The gold composition comprises at least 3% weight of the nanotube composite based on the total weight of the nanotube composite and the gold composition is located in at least one of the wall of the titanium nanotube and the wall of the multiwalled carbon nanotube. Photocatalytic oxidation of neat cyclohexane (CHA) with H2O2 as an oxidant was carried out. Au/TNT-MWCNT catalysts promoted partial CHA oxidation with high conversion (6-7.5%) and selectivity (60-75%) to cyclohexanone
摘要翻译:介绍了金/钛纳米管多壁碳纳米管复合材料(Au / TNT-MWCNT)。 金组合物包含基于纳米管复合材料的总重量的至少3重量%的纳米管复合材料,并且金组合物位于钛纳米管的壁和多壁碳纳米管的壁中的至少一个中。 进行了以H2O2为氧化剂的纯环己烷(CHA)的光催化氧化。 Au / TNT-MWCNT催化剂促进部分CHA氧化,高转化率(6-7.5%)和选择性(60-75%)到环己酮
摘要:
Methods of synthesizing a cis 3,4-dihydroxy-2-(3-methylbutanoyl)-5-(3-methylbutyl)-4-(4-methylpentanoyl)cyclopent-2-en-1-one (“KDT500”) derivative are provided. Such methods may be used to synthesize any desired KDT derivative. In one embodiment, the KDT500 derivative is KDT501.
摘要:
The present invention relates to a method or composition for treating diabetes mellitus, comprising administering a subject with a pharmaceutical composition comprising a therapeutically effective amount of an active compound from Antrodia camphorate, such as antroquinonols, and a pharmaceutically acceptable carrier. In addition, the prevent invention provides a new process for the total synthesis of antroquinonol. Also provided are the new compounds produced during the process for preparing of antroquinonol.
摘要:
The present invention provides a process for producing an oxide from an alcohol compound, the process comprising the steps of causing silica gel to carry the alcohol compound thereon and an oxidative catalyst thereon, and oxidizing the alcohol compound in the presence of an oxidizing agent, giving an oxide higher in oxidizing degree than the alcohol compound, and also provides a process for producing an oxide from an alcohol compound, the process comprising the steps of causing silica gel to carry the alcohol compound, and subjecting the alcohol compound to an electrolytic oxidation, giving an oxide higher in oxidizing degree than the alcohol compound.
摘要:
The instant invention relates to stable free nitroxyl radicals of formula (I) wherein at least one of the substituents R is —O. and the others are hydrogen or OH; X is —NR1R2, wherein R1 and R2 are independently hydrogen, C1–C18alkyl or together with the nitrogen atom to which they are bound form a 5 or 6 membered ring which may be further interrupted by an O atom. Further subjects of the invention are an oxidation process for alcohols to aldehydes or ketones or to carboxylic acids in the presence of a compound of formula (I) and the use of stable free nitroxyl radicals of formula (I) as oxidation catalysts.
摘要翻译:本发明涉及式(I)的稳定的游离硝酰基,其中至少一个取代基R为-O。 其余为氢或OH; X是-NR 1 R 2 R 2,其中R 1和R 2分别独立地是氢,C 1 -C 4烷基, 或者与它们所连接的氮原子一起形成可被O原子进一步中断的5或6元环。 本发明的其它主题是在式(I)化合物和式(I)的稳定的游离硝酰基作为氧化催化剂的存在下,将醇与醛或酮或羧酸的氧化方法。
摘要:
Catalytic systems and methods for oxidizing materials in the presence of metal catalysts (preferably manganese-containing catalysts) complexed with selected macropolycyclic rigid ligands, preferably cross-bridged macropolycyclic ligands. Included are using these metal catalysts in such processes as: synthetic organic oxidation reactions such as oxidation of organic functional groups, hydrocarbons, and heteroatoms, including enantiomeric epoxidation of alkenes, enynes, sulfides to sulfones and the like; oxidation of oxidizable compounds (e.g., stains) on surfaces such as fabrics, dishes, countertops, dentures and the like; oxidation of oxidizable compounds in solution, dye transfer inhibition in the laundering of fabrics; and further in the bleaching of pulp and paper products.
摘要:
Aliphatic or alicyclic monoketones or alicyclic diketones of formula (I): R1nullC(nullO)nullR2, wherein R1 is a linear or branched C1-10-alkyl group and R2 is a linear or branched C1-10-alkyl group or a phenyl group, or R1 and R2 together are null(CH2)mnullnullC(nullO)nullnnull(CH2)pnull, wherein m and p independently are integers from 1 to 4 and n is 0 or 1, thus forming an alicyclic ring together with the carbonyl group of (I), are produced by oxidizing an alcohol of formula (II): R1nullnullCHOHnullR2null, in which R1null and R2null either have the same meaning as R1 and R2 above or, if R1 and R2 together are null(CH2)mnullnullC(nullOnullnnull(CH2)pnull, are together null(CH2)mnull(CHOH)nnull(CH2)pnull wherein m, n and p are as defined above, with a peroxy compound in the presence of a carboxylic acid and a manganese(IV) complex of 1,4,7-trimethyl-1,4,7-triazacyclononane.
摘要:
The present invention relates to an oxidation reaction catalyzed by a reaction controlled phase-transfer catalyst having the general formula of null(R1)(R2)(R3)(R4)NnullxHynullAnullAnull or QmMO3(L). The catalysts themselves are not soluble in the reaction medium, but can form an active species that is soluble in the reaction medium under the action of one of the reactants. The active species can in turn react selectively with another reactant. When one of the reactants is completely consumed, the catalyst will separate out from the reacting system and can be recovered by means of simple separation method. The recovered catalyst can be recycled with comparable efficiency as that of the original catalyst. The separation of said catalyst is similar to that of heterogeneous catalyst while said catalyst will completely exhibit the characteristics of homogeneous catalyst during the reaction. The catalytic oxidation reaction system is especially suitable for the large-scale industrial production of epoxy cyclohexane from cyclohexene or of epoxy propane from propylene.
摘要翻译:本发明涉及由具有通式[(R 1)(R 2)(R 3)(R 3)(R 4))N] x H y的反应控制相转移催化剂催化的氧化反应 [A] A]或QmMO 3(L)。 催化剂本身不溶于反应介质,但可以在一种反应物的作用下形成可溶于反应介质的活性物质。 活性物质又可以选择性地与另一种反应物反应。 当其中一种反应物被完全消耗时,催化剂将从反应体系中分离出来并且可以通过简单的分离方法回收。 回收的催化剂可以与原始催化剂的效率相当的效率再循环。 所述催化剂的分离类似于非均相催化剂,而所述催化剂在反应期间将完全表现出均相催化剂的特性。 催化氧化反应体系特别适用于从环己烯或丙烯环氧丙烷大规模工业生产环氧环己烷。
摘要:
A process is provided for catalyzing an organic reaction to form a reaction product by placing reactants and a catalyst for the organic reaction, the catalyst of a metal complex and at least one ligand soluble within one of the phases of said aqueous biphasic system, within an aqueous biphasic system including a water phase, a dense phase fluid, and a surfactant adapted for forming an emulsion or microemulsion within the aqueous biphasic system, the reactants soluble within one of the phases of the aqueous biphasic system and convertible in the presence of the catalyst to a product having low solubility in the phase in which the catalyst is soluble; and, maintaining the aqueous biphasic system under pressures, at temperatures, and for a period of time sufficient for the organic reaction to occur and form the reaction product and to maintain sufficient density on the dense phase fluid, the reaction product characterized as having low solubility in the phase in which the catalyst is soluble.