نتایج جستجو برای: acid anhydrides
تعداد نتایج: 748601 فیلتر نتایج به سال:
A new approach to preparing porous carbons with desirable pore structure and morphology is demonstrated by using an appropriate pair of polycarboxylic acid/anhydride and diamine in the presence of a metal salt without a sacrificial template.
Series of benzoolysis experiments with 1,2-dipalmitoyl glycerophosphocholine (GPC), 1-palmitoyl-2-lyso GPC, and 1-O-hexadecenyl-2-oleoyl GPC, as well as a few experiments with 1-oleoyl-2-acetyl GPC and 1-O-hexadecyl-2-acetyl GPC are reported. The results are used to present a consistent picture of the various dephosphorylation and benzoylation reactions occurring in molten benzoic anhydride.
This review deals with recent organo-catalyzed/initiated developments of co-polymerization cyclic anhydrides and epoxides to access polyesters.
A novel and practical procedure for preparation of imides is described using chromium(VI) oxide to catalyze the oxidation of N-alkylamides with periodic acid in the presence of acetic anhydride in acetonitrile.
In this study, perthiophosphonic acid anhydrides which are previously known (2,4-bis(3-methoxytolyl)-1,3-dithia-2,4-diphosphetane-2,4-disulfide ([(3-methoxytolyl)P(S)S)2], SAV-B1 reagent and 2,4-bis(ferrocenyl)-1,3,2,4-dithiadiphosphetane-2,4-disulfide [(ferrocenyl)P(S)S)2], FcLR, Ferrocenyl Lawesson's Reagent) react with alcohols to obtain new dithiophosphonic acids (3-methoxytolyl=(CH3)(OCH3)...
An exothermic reaction, leading to 3-(2-furyl)acrylic anhydride and a little amount of furfurylideneacetone is taking place when reacting 3-(2-furyl)acrylic acid in acetic anhydride above 120°C. The 3-(5-acetyl-2-furyl)acrylic acid was formed under the afore-mentioned conditions only in the presence of H 3 P 0 4 . The 3-(2-furyl)acrylic anhydride is more stable towards HNO, at temperatures unde...
Group 4 metallocene complexes are effective catalysts in the ring-opening copolymerisation of epoxides and anhydrides to afford bio-derived polymers.
PhSCF2SiMe3 () underwent fluoride-catalyzed nucleophilic addition to the carbonyl group of anhydrides to provide the corresponding γ-difluoro(phenylsulfanyl)methyl γ-lactols, which were employed for the synthesis of γ-difluoromethylated γ-lactams.
This study includs the synthesis of some new Amic acid and Imides,starting from esters [S1] Terephthalic which then converted toits hydrazide [S2] to amic derivatives [S3-S7] finally withimides [S8-S12]. Preparing ester by usual esterification ofterephthalic with absolute ethanol in acidic medium, hasconverted its reacting it hydrazine hydrate. Theamic have been synthesized reaction ofhydrazide...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید