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2- Nitro-4,5-dimethoxy

As for the anode process at comparable conditions, the yield of 2,5-dimethoxy nitro benzene depends distinctly on the electrical nature of the micelle. Namely, the yields are equal to 30% for the positively charged micelle, 40% for the negatively charged micelle, and 70% for the neutral charged micelle. The observed micellar effect corroborates the mechanism, including the dimethoxy benzene cation radical and the nitrogen dioxide radical as reacting species. [Pg.256]

Pyridine, 2-nitro-3,5-dimethoxy-rate eonstants, 2, 190 (75JCS(P2)1600)... [Pg.51]

Furan, 2,3-dihydro-5-methyl-polymers, 1, 276 Furan, 2,3-dihydro-3-methylene- H NMR, 4, 577 Furan, 2,5-dihydro-2-methylene- H NMR, 4, 577 tautomerism aromaticity and, 4, 595 Furan, 2,5-dihydro-2-nitro-structure, 4, 550 Furan, 2,3-dihydroxy-tautomerism, 4, 37 Furan, 2,4-dihydroxy-tautomerism, 4, 37 Furan, 3,4-dihydroxy-tautomerism, 4, 37 Furan, 2,5-diiodo-nitration, 4, 602 synthesis, 4, 712 Furan, 3,4-diiodo-reactions, 4, 650 Furan, 2,3-dimethoxy-synthesis, 4, 625, 648 Furan, 2,5-dimethoxy-synthesis, 4, 648 Furan, 3,4-dimethoxy-cycloaddition reactions, 4, 64, 625 lithiation, 4, 651 reactions... [Pg.630]

Pyridine, 2,6-dimethoxy-3-nitro-nitration, 2, 188 Pyridine, 2,3-dimethyl-synthesis, 2, 479 Pyridine, 2,4-dimethyI-acylation, 2, 333 alkylation, 2, 333 synthesis, 2, 479... [Pg.786]

Nitration of 3,5-dimethoxypyridine and 3,5-dimethoxy-2-nitropyridine takes place at the 6 position as expected. For the former compound the rate-acidity profile shows reaction to clearly occur on the conjugate acid, whereas the latter only has a small increase in rate coefficient between H0 — 7.8 and —9.0, suggesting reaction on the free base. Correction of the observed rate coefficients as before gives a rate-acidity profile similar to that of 3,5-dimethoxypyridine showing that the reaction takes place upon the free base of the nitro compound. The corrected... [Pg.18]

Die als Zwischenprodukte gebildeten Halbacetale sind nur in wenigen Fallen isolier-bar. Z.B. bildet Difluor-nitro-essigsaure-isopropylester mit Natriumboranat in 1,2-Dimethoxy-athan das durch die stark elektronenanziehenden Substituenten stabilisierte HalbacetaF ... [Pg.194]

Acetylchlorid 282, 675 (2-Nitro-3,4-dimethoxy-phenyl)- 788 Phenyl- 189 Trichlor- 186 Trifluor- 186, 188... [Pg.884]

Nitro-3,4-dimethoxy-phenyl)- 188 2-Nitro-l-(2-hydroxylamino-phenyl)- 694 2-Nitro-l-(2-nitro-phenyl)- 694... [Pg.886]

Chlor- -phenylester 192 Diacetamino- -athylester 240 Dichlor- 618 Dichlor- -chlorid 186 Difluor-nitro- -benzylester 211 Difluor-nitro- -isopropylcster 194 (4,5-Dimethoxy-2-carboxy-phenyl)- -methylester 200... [Pg.901]

Nitro-4,5-dimethoxy-l-(2-nitro-vinyl)- 473 4-Nitro-l-dimethylamino- 238... [Pg.938]

Dimethoxy-1 -methyl-3-p-nitrostyryl-2( l//)-quinoxalinone gave 3-p-amino-phenethyl-6,7-dimethoxy-l-methyl-2(l//)-quinoxalinone (102) (H2, Pt02, AcOEt, 20°C 72% note incidental reduction of the nitro group). [Pg.111]

Methyl 2,3-dichloro- (140, R = C1) gave methyl 2,3-dimethoxy-6-methyl-7-nitro-5-quinoxalinecarboxylate (140, R = OMe) (MeONa, MeOH, 20°C substrate), slowly (exothermic), 15 min 87% note the very gentle conditions... [Pg.159]

Dimethoxy-3-phenylquinoxaline (4) gave either 5,7-dimethoxy-8-nitro-3-phenylquinoxaline (5) [70% HNO3, AC2O, 22°C, until tic showed that (4) had gone 63 %] or 5,7-dimethoxy-6,8-dinitro-3-phenylquinoxaline (6) [simi-... [Pg.256]

Dimethoxy-5-quinoxalinecarbaldehyde (23, R = H) gave 2,3-dimethoxy-7-nitro-5-quinoxalinecarbaldehyde (23, R = N02) [HNO3, H2SO4, F3CCO2H, (F3CC0)20, 0°C, no farther details 75%]. ... [Pg.259]

Dimethoxy-8-nitro-3-phenyl-2(17/)-qumoxalinone (43, R = N02) gave 8-amino-5,7-dimethoxy-3-phenyl-2(l/7)-qumoxalinone (43, R = NH2) (Na2S204, NaHCOa, MeOH, H2O, reflux, 30 min 64%). ... [Pg.265]

Methyl 2,3-dimethoxy-6-methyl-7-nitro-5-quinoxalinecarboxylate (2, R = Me) gave 2,3-dimethoxy-6-methyl-7-nitro-5-quinoxalinecarboxylic acid (2, R = H) (KOH, H2O, THF, 20°C, 27 h 95%). ... [Pg.318]

Dimethoxy-6-methyl-7-nitro-5-quinoxalinecarbonyl chloride (88, R = Cl) gave 2,3-dimethoxy-6A(A(-trimethyl-7-nitro-5-quinoxalinecarboxamide (88, R= NMe2) (MejNH, THE, 20°C, 19 h >95%), V-(tert-butoxycarbonyl-methyl)-2,3-dimethoxy-6-methyl-7-nitro-5-quinoxalinecarboxamide (88, R = NHCHj CO2BU ) (Bu 02CCH2NH2-HC1, EtaN, THE substrate/THEj drop-wise, N2, 5 min then 20°C, 24 h 77%), and a variety of analogs similarly. ... [Pg.333]

See other pages where 2- Nitro-4,5-dimethoxy is mentioned: [Pg.721]    [Pg.191]    [Pg.387]    [Pg.16]    [Pg.26]    [Pg.28]    [Pg.92]    [Pg.804]    [Pg.228]    [Pg.307]    [Pg.321]    [Pg.255]    [Pg.293]    [Pg.252]    [Pg.214]    [Pg.332]    [Pg.158]    [Pg.194]    [Pg.501]    [Pg.887]    [Pg.938]    [Pg.9]    [Pg.379]    [Pg.394]    [Pg.394]    [Pg.394]    [Pg.395]    [Pg.395]    [Pg.395]    [Pg.396]    [Pg.418]   


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4- Chlor-2,5-dimethoxy-1 -nitro

5.7- Dimethoxy-8-nitro-3-phenylquinoxaline

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