Synthesis and Structures of an Organometallic Carboxyphosphine,rac-{2-(Diphenylphosphino)ferrocenyl}acetic Acid, Related Compounds, and Palladium(II) Complexes withrac-{2-(Diphenylphosphino)ferrocenyl}acetato or Methylrac-{2-(Diphenylphosphino)ferrocenyl}acetate and Ortho-PalladatedC,N-Chelate Ligands

2003 ◽  
Vol 22 (8) ◽  
pp. 1728-1740 ◽  
Author(s):  
Petr Štěpnička ◽  
Ivana Císařová
Keyword(s):  
Acetic Acid ◽  
Chelate Ligands ◽  
Related Compounds

Atmospheric concentrations of formic and acetic acid and related compounds in eastern and northern Austria

1988 ◽  
Vol 22 (12) ◽  
pp. 2841-2850 ◽  
Author(s):  
H. Puxbaum ◽  
C. Rosenberg ◽  
M. Gregori ◽  
C. Lanzerstorfer ◽  
E. Ober ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Atmospheric Concentrations ◽  
Related Compounds

Structure and Conformation of Photosynthetic Pigments and Related Compounds 9 On the Structure and Macrocycle Conformation of Two Copper(II) Rhodochlorin Derivatives and Two Related Rhodoporphyrins

1995 ◽  
Vol 50 (6) ◽  
pp. 969-981 ◽  
Author(s):  
Mathias O. Senge ◽  
Karin Ruhlandt-Senge ◽  
Shwn-Ji H. Lee ◽  
Kevin M. Smith
Keyword(s):  
Crystal Structure ◽  
Acetic Acid ◽  
Formic Acid ◽  
Photosynthetic Pigments ◽  
Dimethyl Ester ◽  
Substituent Effects ◽  
Crystal Data ◽  
Free Base ◽  
The Mean ◽  
Related Compounds

Crystal structure analyses of (rhodochlorinato-15-acetic trimethyl ester)copper(II) 3 and (31, 32-didehydro-rhodochlorinato-15-formic acid trimethyl ester)copper(II) 4 reveal intriguing multiple macrocycle conformations of the metallochlorins in the crystal. The observed conformations range from almost planar macrocycles to distorted macrocycles with individual atoms being displaced up to 0.72 Å from the mean plane. The nonplanar macrocycles show a S4-ruffled macrocycie distortion with significant distortions for the meso-carbons and tilting of the Cb- Cb axes. A comparison with the related free base porphyrins rhodoporphyrin-15- acetic acid trimethyl ester 5 and rhodoporphyrin dimethyl ester 6 shows that the conformational distortion is due to the mixing of metal and substituent effects, hydroporphyrin character, and packing forces. Crystal data: 3, monoclinic, P21, a = 12.096(4) Å, b - 14.307(4) Å, c = 22.343(9) Å , β = 104.94(4)°, Z = 4 (2 indep. mol.), R = 0.069 for 8141 reflections with I > 2.0σ(I); 4, triclinic, P 1, a = 10.528(3) Å . b - 10.646(4) Å, c = 34.026(13) Å, α = 89.81(4)°, β = 88.72(3)°, γ = 60.38(2)°, Z = 4 (4 indep. mol.). R = 0.073 for 9446 reflections with I > 2.5σ(I); 5, triclinic, P 1̄, a = 9.591(2) Å, b = 12.959(4) Å, c = 13.453(4) Å, α = 105.86(2)°, β = 92.67(2)°, γ = 96.12(2)°, Z = 2, R = 0.060 for 4990 reflections with I > 2.5 σ(I); 6, triclinic, P 1̄, a = 8.908(4) Å, b = 12.895(5) Å, c = 13.482(6) Å , α = 102.74(3)°, β = 90.38(4)°, γ = 91.84(3)°, Z = 2, R = 0.089 for 3369 reflections with I > 2.0σ(I).

Pyrimidine Derivatives and Related Compounds, V Synthesis of Some Isoxazolo [2,3-a] pyrimidines. A New Ring System

1977 ◽  
Vol 32 (3) ◽  
pp. 311-314 ◽  
Author(s):  
Mohamed Hilmy Elnagdi ◽  
Ezzat Mohamed Kandeel ◽  
Kamal Usef Sadek
Keyword(s):  
Acetic Acid ◽  
Hydrochloric Acid ◽  
Ethyl Acetoacetate ◽  
Pyrimidine Derivative ◽  
Ring System ◽  
The Other ◽  
Acid Mixture ◽  
Pyrimidine Derivatives ◽  
Benzoyl Isothiocyanates ◽  
Related Compounds

3-Amino-5-phenyl-4-phenylazoisoxazole (1) reacts with ethyl acetoacetate to yield the corresponding ethyl isoxazolylaminocrotonate derivative (2) which could be thermally cyclized into the isoxazolopyrimidine derivative (4). On the other hand, condensation of 1 with ethoxymethylenemalononitrile has resulted in the formation of the aminoethylene derivative (5).Compound 1 reacted with acrylonitrile to yield the isoxazolo[2,3-a]pyrimidine derivative (6). The latter was converted into the corresponding exo derivative (8) by the action of acetic acid-hydrochloric acid mixture.Compound 1 also reacted with methoxycarbonyl-, ethoxycarbomyl- and benzoyl isothiocyanates to yield the isoxazolylthioureas (10a, b) and (11), respectively. The reaction of 2 with acetic acid-hydrochloric acid and with phenylhydrazine is reported.

STUDIES ON RDX AND RELATED COMPOUNDS: II. THE NITROLYSIS OF HEXAMINE IN ACETIC ACID

1950 ◽  
Vol 28b (11) ◽  
pp. 715-719 ◽  
Author(s):  
C. A. Winkler ◽  
M. Kirsch
Keyword(s):  
Acetic Acid ◽  
Nitric Acid ◽  
Deleterious Effect ◽  
Reaction Rate ◽  
Harmful Effect ◽  
Maximum Yield ◽  
Related Compounds

Acetic acid has a harmful effect on the reaction rate and on the yield of RDX at 1 °C. and at 30 °C. for a given nitric acid – hexamine ratio below a certain optimum value. At the optimum, however, the maximum yield of 80% is obtained at both temperatures. The deleterious effect of acetic acid may be explained by assuming that the concentration of the active nitrolyzing agent (nitracidium ion) is decreased by reaction between acetic acid and nitric acid.

ChemInform Abstract: NONSTEROIDAL ANTIINFLAMMATORY AGENTS PART 1, 2,4-DIPHENYLTHIAZOLE-5-ACETIC ACID AND RELATED COMPOUNDS

1975 ◽  
Vol 6 (9) ◽  
pp. no-no
Author(s):  
K. BROWN ◽  
D. P. CATER ◽  
J. F. CAVALLA ◽  
D. GREEN ◽  
R. A. NEWBERRY ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Antiinflammatory Agents ◽  
Nonsteroidal Antiinflammatory Agents ◽  
Related Compounds

Synthesen mit aliphatischen Dialdehyden, XXVII [1] Eine „non-template“-Synthese zur Darstellung metallfreier 1.4.8.11-Tetraaza [14] annulen-Derivate / Syntheses with Aliphatic Dialdehydes, XXVII [1] A Non-Template Synthesis for the Preparation of Metal-Free 1,4,8,11-Tetraaza[14]annulene Derivatives

1978 ◽  
Vol 33 (9) ◽  
pp. 1012-1015 ◽  
Author(s):  
Christian Reichardt ◽  
Wolfgang Scheibelein
Keyword(s):  
Acetic Acid ◽  
Template Synthesis ◽  
Mass Spectra ◽  
Metal Cations ◽  
Metal Free ◽  
Ethanol Acetic Acid ◽  
Chelate Ligands

The reaction of 2-substituted malonaldehydes (7) with aromatic 1,2-diamines (5 or 6) in ethanol/acetic acid (10:1) leads to 6,13-disubstituted 1,4,8,11 -tetraaza[14]annulene derivatives (8 or 9) even in the absence of coordinating metal cations ("non-template" synthesis), and not to 3-substituted 1,5-benzodiazepines such as 4. Cobalt(II), nickel(II), and copper(II) complexes of the macrocyclic chelate ligands 8 and 9 have been observed by subsequent metallization with the corresponding acetates in N,N-dimethylformamide. The structures of 8-11 have been assigned mainly by their mass spectra.

IX.—The Synthesis of 8-Bromo-3-methoxyfluoranthene.

1969 ◽  
Vol 68 (2) ◽  
pp. 127-137
Author(s):  
Neil Campbell ◽  
Naim M. Hasan
Keyword(s):  
Acetic Acid ◽  
Carboxylic Acids ◽  
Good Yield ◽  
Related Compounds

SummaryA second method for the synthesis of 8-bromo-3-methoxyfluoranthene from 2-bromo-7-methoxyfluorene is described. The autoxidation of fluorene derivatives including the 9-carboxylic acids and of related compounds, particularly 4-α-cyanobenzyl-7−oxo-7H-benz[de]anthracene, is discussed. Unsuccessful attempts to prepare 3-bromofluorene-9-acetic acid in good yield are reported.

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