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1

Lepsze ciepło, bo z natury – odzyskiwanie ciepła z wód dołowych

Jończyk A., Orzeł P., Koczorek C., Wołczyński B.

Inżynieria Górnicza

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2015

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nr 4

43--45

PL

W artykule opisano zastosowane w Zakładzie Górniczym Sobieski TAURON Wydobycie SA innowacyjne rozwiązanie pozwalające na wykorzystanie pompy ciepła do ogrzewania wody wykorzystywanej w łaźniach górniczych. Autor przytacza przebieg realizacji inwestycji, jej koszty i oszczędności.

2

Solid Sodium Hydrox ide - THF, Convenient System for Synthesis Esters of Glycidic Acids by Darzens Condensation

Gadaj A., Kowalkowska A., Jończyk A.

Polish Journal of Chemistry

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2008

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Vol. 82, nr 3

577-584

EN

Isopropyl- and tert-butylchloroacetate react with carbonyl compounds in the presence of powdered sodium hydroxide in THF, with out a catalyst, giving substituted glycidates. The process is applied for preparation of glycidates from ketones, hitherto unavailable by phase-transfer catalyzed Darzens condensation.

3

Is a Phase Transfer Catalyst Really Needed for gem-Dihalocyclopropanation of Alkenes with Haloforms in the Presence of Alkali Metal Hydroxide?

Karwowska H., Jończyk A.

Polish Journal of Chemistry

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2007

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Vol. 81, nr 1

45-49

EN

Chloroform, bromoform and dibromochloromethane react with alkenes in the presence of conc. aq. sodium hydroxide, without phase-transfer catalyst, giving gem-dihalocyclopropanes. The process is particularly useful for preparation of gem-bromochlorocyclopropanes which are formed in good yields and in high selectivity.

4

Expedient Synthesis of Glycidonitriles by Darzens Condensation of alfa-Halogenonitriles with Aldehydes and Ketones

Jończyk A., Gadaj A.

Polish Journal of Chemistry

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2007

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Vol. 81, nr 9

1595-1610

EN

Chloroacetonitrile (1), a-halogenopropionitriles 4, and a-chlorophenylacetonitrile (6) react with aldehydes 2a,b,h-o and ketones 2c-g,p-t in the presence of solid NaOH in THF or DME, with out any added catalyst, affording substituted glycidonitriles 3a-t, 5a, c-g,r,s and 7a,b,i,j,u,v, respectively (Darzens condensation). The glycidonitriles 3a-h, prepared from 1 and carbonyl compounds 2a-h, are obtained in high yields, exceeding thoe reported in the literature (Table 5). Expedient results of the reactions studied are due to increased reactivity of an ions with Na+ as counterion in ethereal solvents. Investiga tion of the concentration of NaOH and the carbanion of diphenylacetonitrile in selected solvents reveals that ethereal solvents may in crease the solubility of the anions participating in Darzens condensation.

5

Preparation of Heat Resistant and Insensitive Explosives by Vicarious Nucleophilic Substitution (VNS) in Polinitroaromatic Compounds

Szala M., Jończyk A., Skupiński W.

Central European Journal of Energetic Materials

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2005

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Vol. 2, nr 2

15-27

EN

Reaction of vicarious nucleophilic substitution (VNS) of hydrogen was applied for preparation of 1,3,5-triamino-2,4,6-trinitrobenzene (TATB) in a twostep process. Using this approach 3-amino-2,4,6'2'4 6' -hexanitrostilbene (MNHNS) and new 2,6-bis(3-amino-2,4,6-trinitrophenyl)-3,5-dinitropyridine (DAPYX) were obtained.

6

Dimerization of Phenylindenes by Means of Perchloroalkanes Under Conditions of Phase Transfer Catalysis

Jończyk A., Szymanek P., Juszczuk C.

Polish Journal of Chemistry

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2000

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Vol. 74, nr 7

985-988

EN

Penyl substitued indenes 1 react with tetrachloromethane or hexachloroethane HCE in the presence of 50% aq. KOH and benxyltriethylammonium chloride as a catalyst to give dimmers in 23-48% yield.

7

Sigmatropic Rearrangements of Ylides Generated from N-(A-Cyano)benzyl-N,N-dimethyl-N-substituted Ammonium Salts with a Base

Zdrojewski T., Gołębiowski R., Mirkowska A., Jończyk A.

Polish Journal of Chemistry

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1999

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Vol. 73, nr 12

1955-1964

EN

Quaternary ammonium salts 1-4, treated with four different base-solvent systems A-D, generated ylides YI and YII which in turn, rearranged with formation of the products 6,9 and/or 7,8 as the products of [1,2] or [2,3] shift, respectively. The products 9a,d eliminated dimethylamine, when refluexed in methanol to afford methy(Z)-B-cyanocinnamates 10a,d. The salts 2 and 4 generated ylides, which formed rearranged products in better yields than the salt 3.