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1
100%
Polish Journal of Chemistry
EN t-Butyl methyl iminodicarbonate (3) can be easily alkylated with primary or secondary alcohols under Mitsunobu conditions (DIAD, TPP) to give the corresponding N-alkyl iminodicarbonates. Partial deprotection of the latter with methanolic potassium hydroxide affords N-Boc-amines (5) in good yields.
2
100%
Polish Journal of Chemistry
2003 Vol. 77 / nr 10 1281-1286
EN The preparation of silica gel supported _-picolinium chlorochromate and its application as an efficient reagent for selective oxidation of oximes and alcohols into carbonyl compounds is reported. The trimethylsilyloxy and ester groups survived under the reaction conditions.
3
100%
Molecular and Quantum Acoustics
2005 Vol. 26 317-326
EN Internal pressure was calculated for some alcohols from experimental data on isothermal compressibility and isobaric coefficient of thermal expansion as well as by using of the mean molecular radius, in most cases from the speed of ultrasound data. The results differ quantitatively as well as qualit[...]
4
100%
Mechanics and Mechanical Engineering
EN In the paper a review of alternative fuels to compression ignition engines has been performed. Fuels, which presently are mostly used, are biofuels such as transesterified vegetable oils (FAME) and alcohols (bioethanol). Main part of the paper comprises the experimental investigation performed by th[...]
5
88%
Molecular and Quantum Acoustics
2003 Vol. 24 261-270
EN The excess values of the molar adiabatic compressibility as well as adiabatic compressibility coefficient were estimated for binariy mixtires of 1,2-ethanediol+1-pentanol at 298.15K. Also deviations of the ultrasonic speed from the chosen additivity rules were determined. Both the excess quantities [...]
6
88%
Molecular and Quantum Acoustics
2004 Vol. 25 291-296
EN The excess values of the molar adiabatic compressibility as well as adiabatic compressibility coefficeint were estimated for binary mixtures of 1,2-ethanediol+1-pentanol at the temperatures (293.15, 303.15, 308.15 and 313.15) K. Alsko deviations of the ultrasonic speed from the chosen additivity rul[...]
7
88%
Molecular and Quantum Acoustics
2002 Vol. 23 463-472
EN The excess values of the molar volume and molar adiabatic compressibility as well as adiabatic compressibility coefficient were estimated for binariey mixtures of cyclohexanol + glycerol at 298.15K. Also deviations of the ultrasonic speed from the chosen additivity rules were determined. Both the ex[...]
8
88%
Polish Journal of Chemistry
EN Reaction is not first order in respect to epichlorohydrine and is particularly fast at the beginning and its rate constants are proportional to the concentration of the catalyst. The rate constants increase in the homogolous series of C1-C10 alcohols.
9
88%
TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk
2001 Vol. 5, No 3 317-329
EN Using the Kirkwood-Buff theory of solutions, the preferential solvation of the N-methylacet-amide (NMA), N-methylformamide, (NMF), and N,N-dimethylformamide, (DMF), molecule has been investigated in the binary {amide+methanol} mixtures at 313.15 K. Moreover, for the {amide+methanol} mixtures, where [...]
10
88%
Physicochemical Problems of Mineral Processing
EN Over the past 20 years quantitative measures of frother functions have been developed to try to replace such qualitative descriptors as “weak” and “strong”. One of these metrics is the critical coalescence concentration (CCC) that quantifies a frother’s ability to reduce bubble size; another is the [...]
11
75%
Polish Journal of Chemistry
2009 Vol. 83, nr 12 2225-2238
EN The new QSPR correlation equation was developed for the estimation of the boiling points of three families of oxygen containing aliphatic compounds. This equation includes contributions depending on the total number of carbon atoms forming a molecule and the fragment term represented as an explicit [...]
12
75%
Ochrona przed Korozją
2009 nr 11 543-545
PL Praca prezentuje badania elektrochemicznych właściwości żelaza w bezwodnych metanolowych, roztworach chloranu (VII) litu i chlorku litu. Badania były prowadzone za pomocą woltametrii cyklicznej. W roztworach nadchloranu litu, żelazo ulega pasywacji. Dodatek chlorku litu ogranicza zakres pasywny do p[...]
EN The paper presents the study of electrochemical properties of iron in anhydrous methanol, ethanol and n-propanol solutions of lithium perchlorate and lithium chloride. Investigations were performed by means of linear sweep voltammetry. In alcohol - lithium perchlorate solutions iron undergoes passiv[...]
13
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Przemysł Chemiczny
2003 T. 82, nr 8-9 1287-1290
14
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Physicochemical Problems of Mineral Processing
2001 Vol. 35 43-53
PL Wykorzystując opublikowane wartości czasu destrukcji struktury słupka sedymentu w rurce szklanej dla frakcji ziaren węgla o średniej średnicy 1.5x10-4m, 2.5x10-4m, 3.5x10-4m i 4.5x10-4m, w węglowodorach od heksanu do heksadekanu i alkoholach od metanolu do dekanolu, przeprowadzono badania nad korela[...]
EN Taking into account the published earlier values of the destruction time of the coal column structure formed from the four fractions of coal particles having the average diameter 1.5x10-4 m, 2.5x10-4 m, 3.5x10-4 m and 4.5x10-4 m in the homologous series of alkanes and alcohols, the correlation betwe[...]
15
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Przemysł Chemiczny
2005 T. 84, nr 2 105-109
16
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Nukleonika
EN The o-Ps mean lifetime value in liquids decreases in the presence of the paramagnetic oxygen molecules via the ortho-para conversion process. This effect was observed for several organic samples composed of carbon and hydrogen atoms differing in the arrangement of atoms forming the molecule, e.g. n-[...]
17
63%
International Letters of Chemistry, Physics and Astronomy
2013 Vol. 2 18-35
EN Ultrasonic velocities and densities of the binary liquid mixtures of benzene with 1-propanol, 2-propanol, 1-butanol, 2-butanol and 3-butanol at 303.15 to 318.15 K, over the entire composition range were measured. The theoretical values of ultrasonic velocity were evaluated using the Nomoto’s Relatio[...]
18
63%
Zeszyty Naukowe. Chemia Spożywcza i Biotechnologia / Politechnika Łódzka
1998 Z. 60 65-74
PL Alifatyczne ketony i alkohole C7-C13 z grupą funkcyjną w położeniu 2 tworzą się w wieloetapowych procesach oksydacyjno-enzymatycznych przemian kwasów tłuszczowych i są dobrze znane jako składniki aromatu wielu produktów spożywczych. Natomiast ich izomery z grupą funkcyjną w położeniu odpowiednio 3, [...]
EN Aliphatic ketones and alcohols from C7 to C13 with functional group in 2 position are produced in multistep oxidative-enzymatic transformations of fatty acids. They are known as the flavour components of many food products. Their isomers with functional group in the position 3,4,5,6,7 are much less [...]
19
63%
Inżynieria i Aparatura Chemiczna
2009 Nr 3 121-122
PL Zbadano wydajność wytwarzania wodoru z mieszaniny lotnych kwasów tłuszczowych z etanolem, propanolem i propano-1,3-diolem w obecności Rhodobacter sphaeroides. Substancje te nie inhibitowały wzrostu bakterii i produkcji wodoru, jednakże propano-l,3-diol nie był metabolizowany. Maksymalna ilość wodoru[...]
EN Efficiency of hydrogen production from the mixture of volatile fatty acids with ethanol, propanol and propane-l,3-diol in the presence of Rhodobacter sphaeroides was measured. These substances did not inhibit bacterial growth and hydrogen production. However, propa-ne-l,3-diol was not metabolized. T[...]
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Chemik
PL Przedstawiono rozwój procesów przemysłowych hydroformylowania olefin z zastosowaniem konwencjonalnego katalizatora kobaltowego oraz katalizatorów kobaltowych i rodowych modyfikowanych ligandami fosfinowymi. Opisano procesy przemysłowe wytwarzania olefin jako półproduktów dla procesów hydroformylowan[...]
EN Developments were presented within industrial processes for hydroformylation of olefins with the use of a traditional cobalt-based catalyst and rhodium-based catalysts modified with phosphine ligands. Commercial processes were described for the production of olefins being feeds for hydroformylation [...]
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