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Contrasting Effects of Water on the Barriers to Decarboxylation of Two Oxalic Acid Monohydrates: A Combined Rotational Spectroscopic and Ab Initio Study.

The journal of physical chemistry letters

Schnitzler EG, Badran C, Jäger W.
PMID: 26963633
J Phys Chem Lett. 2016 Apr 07;7(7):1143-7. doi: 10.1021/acs.jpclett.6b00278. Epub 2016 Mar 11.

Using rotational spectroscopy, we have observed two isomers of the monohydrate of oxalic acid, the most abundant dicarboxylic acid in the atmosphere. In the lowest-energy isomer, water hydrogen-bonds to both carboxylic acid groups, and the barrier to decarboxylation decreases....

Hygroscopic growth of particles nebulized from water-soluble extracts of PM2.5 aerosols over the Bay of Bengal: Influence of heterogeneity in air masses and formation pathways.

The Science of the total environment

Boreddy SK, Kawamura K, Bikkina S, Sarin MM.
PMID: 26688049
Sci Total Environ. 2016 Feb 15;544:661-9. doi: 10.1016/j.scitotenv.2015.11.164. Epub 2015 Dec 11.

Hygroscopic properties of water-soluble matter (WSM) extracted from fine-mode aerosols (PM2.5) in the marine atmospheric boundary layer of the Bay of Bengal (BoB) have been investigated during a cruise from 27th December 2008 to 30th January 2009. Hygroscopic growth...

Tuning Interchain Interactions in Two-Dimensional Networks of Mn(III) Schiff-Base Complexes and Dicarboxylic Acids by Varying the Linker.

Inorganic chemistry

Aono Y, Yoshida H, Katoh K, Breedlove BK, Kagesawa K, Yamashita M.
PMID: 26151757
Inorg Chem. 2015 Jul 20;54(14):7096-102. doi: 10.1021/acs.inorgchem.5b01154. Epub 2015 Jul 07.

Two-dimensional (2D) coordination polymers consisting of Mn(III) Schiff-base complexes and dicarboxylic acids, [{Mn(salen)}4(L1)](PF6)2·(CH3OH)2 (C4; H2L1 = adipid acid) and [{Mn(salen)}4(L2)](PF6)2·(CH3OH)4 (C4'; H2L2 = E,E-1,3-butadiene-1,4-dicarboxylic acid) (salen(2-) = N,N'-(ethylene)bis(salicylideneiminato), were synthesized by using a one-pot reaction and characterized by using...

Formation of C-4 dicarboxylic acids by intact spinach chloroplasts.

Planta

Scheibe R, Beck E.
PMID: 24435300
Planta. 1975 Jan;125(1):63-7. doi: 10.1007/BF00388873.

It is concluded from (14)C labelling kinetics as well as from enzyme analysis that formation of malate and aspartate from glycerate-3P via carboxylation of P-enolpyruvate occurs in isolated photosynthesizing spinach (Spinacia oleracea L.) chloroplasts. Carbon incorporation into both dicarboxylic...

Mesogenic palladium complexes with pincer ligands derived from dipicolinic acid.

Inorganic chemistry

Espinet P, García-Orodea E, Miguel JA.
PMID: 11196828
Inorg Chem. 2000 Aug, 7;39(16):3645-51. doi: 10.1021/ic0001457.

4-Substituted pyridine-2,6-dicarboxylic acids, (E)-dipicH2, and 4-substituted pyridine-2,6-bis(thiocarboxylic) acids, (E)-pdtcH2, (E = OCnH2n + 1, SCnH2n + 1) have been synthesized and used as O,N,O- and S,N,S-pincer ligands with palladium. In the fourth coordination site the complexes bear 4-decyloxy-4'-stilbazole (L1),...

Candida cloacae oxidation of long-chain fatty acids to dioic acids.

Enzyme and microbial technology

Green KD, Turner MK, Woodley JM.
PMID: 10899544
Enzyme Microb Technol. 2000 Aug 01;27(3):205-211. doi: 10.1016/s0141-0229(00)00217-9.

Candida cloacae cells oxidize long-chain fatty acids to their corresponding dicarboxylic acids (dioic acids) at rates dependent on their chain length and degree of saturation. This is despite the well-known toxicity of the fatty acids. Among the saturated substrates,...

Beryllium Chelation by Dicarboxylic Acids in Aqueous Solution.

Inorganic chemistry

Schmidt M, Bauer A, Schmidbaur H.
PMID: 11669821
Inorg Chem. 1997 May 07;36(10):2040-2043. doi: 10.1021/ic961410k.

Maleic and phthalic acids are found to react with Be(OH)(2), generated in situ from BeSO(4)(aq) and Ba(OH)(2)(aq), in aqueous solution at pH 3.0 or 4.4, respectively (25 degrees C), to give solutions containing the complexes (H(2)O)(2)Be[(OOCCH)(2)] (1) and (H(2)O)(2)Be[(OOC)(2)C(6)H(4)]...

Synthesis of phosphole-2,5-dicarboxylic acids via a [1,5]-shift of carbon dioxide around the phosphole nucleus.

Organic letters

Melaimi M, Ricard L, Mathey F, Le Floch P.
PMID: 11950333
Org Lett. 2002 Apr 18;4(8):1245-7. doi: 10.1021/ol0102895.

A new methodology for the synthesis of 1-P-functionalized phosphole-2,5-dicarboxylic acids is described. The carboxylic group is introduced through a two-step sequence which involves a preliminary attack of the phospholide unit onto CO(2) followed by a [1,5]-shift reaction of the...

Abolition of an Inducible Highly Anionic Peroxidase Activity in Transgenic Tomato.

Plant physiology

Sherf BA, Bajar AM, Kolattukudy PE.
PMID: 12231677
Plant Physiol. 1993 Jan;101(1):201-208. doi: 10.1104/pp.101.1.201.

Locally induced expression of a highly anionic peroxidase has previously been correlated temporally and spatially with suberization of tissues responding to pathogen assault, wounding, or exogenously applied abscisic acid or fungal elicitors. DNA sequences corresponding to the 5[prime] regions...

Addition of carboxyalkyl radicals to alkenes through a catalytic process, using a Mn(II)/Co(II)/O2 redox system.

The Journal of organic chemistry

Hirase K, Sakaguchi S, Ishii Y.
PMID: 12868935
J Org Chem. 2003 Jul 25;68(15):5974-6. doi: 10.1021/jo034584+.

A novel strategy for production of mono- and dicarboxylic acids by the addition of carboxyalkyl radicals to alkenes and dienes, respectively, was successfully developed through a catalytic process with use of Mn(II)/Co(II)/O(2) system. Thus, a variety of carboxylic acids...

Mechanochemical preparation of hydrogen-bonded adducts between the diamine 1,4-diazabicyclo[2.2.2]octane and dicarboxylic acids of variable chain length: an X-ray diffraction and solid-state NMR study.

Chemistry (Weinheim an der Bergstrasse, Germany)

Braga D, Maini L, de Sanctis G, Rubini K, Grepioni F, Chierotti MR, Gobetto R.
PMID: 14639637
Chemistry. 2003 Nov 21;9(22):5538-48. doi: 10.1002/chem.200304940.

Mechanical mixing of solid dicarboxylic acids of variable chain length HOOC(CH(2))(n)COOH (n = 1-7) with solid 1,4-diazabicyclo[2.2.2]octane generates the corresponding salts or co-crystals of the formula [N(CH(2)CH(2))(3)N]-H-[OOC(CH(2))(n)COOH] (n=1-7). Preparation of the same systems from solution has been instrumental for...

Symmetric 1,1'-Dimethylferrocene-Derived Amino Acids: Their Synthesis, Characterization, Ligational and Biological Properties With Cu(II), Co(II) and Ni(II) Ions.

Metal-based drugs

Chohan ZH.
PMID: 18475943
Met Based Drugs. 2000;7(4):177-83. doi: 10.1155/MBD.2000.177.

Some novel symmetric 1,1'-dimethylferrocene derived amino acids have been prepared by the reaction of 1,1'-ferrocenedimethyldichloride with amino acids (glycine, alanine, phenylalanine and tyrosine). Their Cu(II), Co(II) and Ni(II) complexes, of the type [M(L)] where [M = Cu(II) and L...

Showing 1 to 12 of 391 entries