Results 101 to 110 of about 100,051,810 (181)

Synthesis and characterisation of iron(III) complexes of 1,2-dihydro-l-phenyl-2,3- dimethyl-4-[2',4'-pentanedione-3'- hydrazono]pyrazol-5-one

, 2004
1245-1248A novel heterocyclic ligand , 1,2-d ihydro-1-phenyl-2,3-dimethyl-4-[2',4' -pentanedione-3' -hydrazono]pyrazol-5-one,[AAPAAC], and its complexes with iron(III) in the presence of chloride, bromide, nitrate and perchlorate anions, have been ...
Ravindran, Reena
core  

The effect of phosphate on the nuclease activity of vanadium compounds

, 2015
International audienceThe nuclease activity of VO(acac)2 (1, acac = acetylacetone) and its derivatives VO(hd)2 (2, hd = 3,5-heptanedione), VO(Cl-acac)2 (3, Cl-acac = 3-chloro-2,4-pentanedione), VO(Et-acac)2 (4, Et-acac = 3-ethyl-2,4-pentanedione) and VO ...
da Silva, José Paulo, Tomaz, Ana Isabel, Pinheiro, José Paulo, Correia, Isabel, Cavaco, Isabel, Ribeiro, Vera, Butenko, Nataliya, Costa Pessoa, João   +7 more
core   +1 more source

Conformational analysis of 3-triphenylphosphoranylidene-2,4-pentanedione by NMR spectroscopy and geometrical optimization

, 2003
The diacyl ylide, 3-triphenylphosphoranylidene-2,4-pentanedione (2) can adopt conformations stabilized by ylidic resonance with both acyl oxygens syn- or with one oxygen syn- and the other anti- to cationoid phosphorus, 2a, Z, Z and 2b, Z, E respectively.
Castaneda, F., Recabarren Gajardo, Gonzalo Iván, Bunton, Clifford A., Recabarren Gajardo, Gonzalo, Castañeda Magliona, Fernando, Gillitt, N.D., Hu, J., Gillitt, N. D., Bunton, C.A.   +8 more
core   +1 more source

Synergistic respiratory risks in coffee processing: a systematic review of alpha-diketone, carbon monoxide, and dust co-exposure

Medycyna Pracy
Modern coffee processing generates a complex, co-localized mixture of respiratory hazards, such as carbon monoxide (CO), volatile α-diketones (principally diacetyl and 2,3-pentanedione), and bio-reactive coffee dust, that challenge single-agent risk ...
Giacomo Beretta, Giovanni Cappelli, Giuseppe La Torre, Ilaria Rapi, Niccolò Fanfani, Sara Pierattini, Nuriiar Safarov, Laura Tuulikki Beretta, Antonio Baldassarre, Nicola Mucci, Stefano Dugheri   +10 more
doaj   +1 more source

4-Acetyl-2-hydroxy-2,5-dimethylfuran-3(2H)-one [PDF]

application/pdfapplication/pdf論文(Article)The facile synthesis of 4-acetyl-2-hydroxy-2,5-dimethylfuran-3(2H)-one (4) was achieved by the Mn(OAc)3-mediated aerobic oxidation of 2,4-pentanedione or the direct reaction of Mn(acac)3 in AcOH-TFE at room ...
ニシノ, ヒロシ, Kawabata, Shun, 川端, 駿, 143640, 赤崎, 智彬, 146758, 西野, 宏, Akazaki, Chiaki, 136179, 136178, 136173, 136172, Nishino, Hiroshi   +12 more
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Application of PLSR in correlating sensory and chemical properties of middle flue-cured tobacco leaves with honey-sweet and burnt flavour

Heliyon
Among the eight types of aroma and flavour characteristics of Chinese flue-cured tobacco (FCT), tobacco grown in Shandong is classified as having a honey-sweet and burnt aroma.
Jing Li, Zhiyuan Ma, Huawei Dai, Hu Li, Jun Qiu, Xueli Pang   +5 more
doaj   +1 more source

Potential of DPD ((S)-4,5-dihydroxy-2,3-pentanedione) Analogs in Microparticulate Formulation as Vaccine Adjuvants

The molecule (S)-4,5-dihydroxy-2,3-pentanedione (DPD) is produced by many different species of bacteria and is involved in bacterial communication.
Christiane Chbib, Devyani Joshi, Sarthak Shah, Mohammad N. Uddin   +3 more
core   +1 more source

J Occup Environ Hyg [PDF]

Gas chromatography/mass spectrometry (GC/MS) operated in selected ion monitoring mode was used to enhance the sensitivity of OSHA Methods 1013/1016 for measuring diacetyl and 2,3-pentanedione in air samples.

core  

Pea Yogurt Alternatives: Aroma Modification by Starter Selection and Carbohydrate Addition. [PDF]

Foods
Yu G, Zhang C, Li X, Kong X, Chen Y, Hua Y.   +5 more
europepmc   +1 more source

Cross-ketone deacylative coupling via oxidative S_H2 homolytic substitution. [PDF]

Nat Commun
Yang JX, Zhang MY, Wen Q, Wang JR, Zhang Y, Jiang H.   +5 more
europepmc   +1 more source