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Volume 2006, September

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Molbank, Volume 2006, Issue 6 (December 2006) – 18 articles

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Open AccessShort Note
The First Example of Oxidative Nucleophilic Substitution of Hydrogen in meso-Aryl Ring of the 5,10,15,20-Tetraphenylporphyrin Derivatives
Molbank 2006, 2006(6), M521; https://doi.org/10.3390/M521 - 01 Dec 2006
Viewed by 1943
Abstract
A synthesis of [2-nitro-5-(10,15,20-triphenylporphyrin-5-yl)-phenyl]phenyl-acetonitrile zinc complex by the reaction of the respective nitroporphyrin with the anion of benzyl cyanide, followed by addition of DDQ, is described. This is the first example of this type of process in the nitrophenyl side ring of meso [...] Read more.
A synthesis of [2-nitro-5-(10,15,20-triphenylporphyrin-5-yl)-phenyl]phenyl-acetonitrile zinc complex by the reaction of the respective nitroporphyrin with the anion of benzyl cyanide, followed by addition of DDQ, is described. This is the first example of this type of process in the nitrophenyl side ring of meso-tetraarylporphyrin derivatives. Full article
Open AccessShort Note
Synthesis and Detailed Spectroscopic Characterization of Two Novel N-(3-Acetyl-2-thienyl)acetamides
Molbank 2006, 2006(6), M520; https://doi.org/10.3390/M520 - 01 Dec 2006
Viewed by 2066
Abstract
The title compounds – N-(3-acetyl-2-thienyl)-2-bromoacetamide and N-(3-acetyl-2-thienyl)-2- phthalimidoacetamide – were synthesized in one step from 3-acetylthiophen-2-amine and the corresponding acetyl halogenides. Detailed spectroscopic data (1H NMR, 13C NMR, 15N NMR, MS, IR) for these compounds are presented. Full article
Open AccessShort Note
Synthesis and Protonation Constants of an Amide-Based Chelating Cyclophane
Molbank 2006, 2006(6), M519; https://doi.org/10.3390/M519 - 01 Dec 2006
Viewed by 2011
Abstract
Our research group have reported that, under high dilution conditions, condensation reactions between 4,4’-ethylenebis(2,6-morpholinedione), 1, and aromatic diamines gave a new series of tetraaza chelating cylophanes, which have amide and aromatic groups in the ring framework and pendant carboxymethyl groups [1].[...] Full article
Open AccessShort Note
Synthesis of 2-(2-napthylthio)-quinoline-3-carboxaldehyde as a novel complexing agent
Molbank 2006, 2006(6), M518; https://doi.org/10.3390/M518 - 01 Dec 2006
Viewed by 2159
Abstract
In this paper we propose the synthesis of 2-(2-napthylthio)-quinoline-3-carboxaldehyde. In addition to its synthesis we present elemental, IR, and NMR spectral analysis to characterize the molecule. Full article
Open AccessShort Note
Synthesis of 3-[(Z)-5-Amino-1, 3, 3-trimethyl cyclohexyl methylimino]-1, 3-dihydroindol-2-one as a novel Schiff base
Molbank 2006, 2006(6), M517; https://doi.org/10.3390/M517 - 01 Dec 2006
Viewed by 2062
Abstract
Isatin (1H-indole-2,3-dione) was first obtained by Erdman and Laurent in 1841 as a product from the oxidation of indigo by nitric and chromic acids [1].[...] Full article
Open AccessShort Note
Synthesis of 3-[(Z)-2-piperazin-1-yl-ethylimino]-1,3-dihydro indol-2-one as a novel Schiff base
Molbank 2006, 2006(6), M516; https://doi.org/10.3390/M516 - 01 Dec 2006
Cited by 1 | Viewed by 1897
Abstract
Isatin (1H-indole-2,3-dione) was first obtained by Erdman and Laurent in 1841 as a product from the oxidation of indigo by nitric and chromic acids [1].[...] Full article
Open AccessShort Note
Rhodamine B Pentyl Ester and its Methyl, Ethyl, Propyl, and Butyl Homologues
Molbank 2006, 2006(6), M515; https://doi.org/10.3390/M515 - 01 Dec 2006
Cited by 2 | Viewed by 2925
Abstract
The rhodamines are a highly fluorescent class of compound used in many different fields of research, from the lasing medium in dye lasers to biological stains and markers for cellular drug resistance [1-3].[...] Full article
Open AccessShort Note
Compare of three ways of synthesis of simple Schiff base
Molbank 2006, 2006(6), M514; https://doi.org/10.3390/M514 - 01 Dec 2006
Cited by 6 | Viewed by 2587
Abstract
In this paper we propose the synthesis of (E)-4-methyl-N-(3,4,5-trimethoxybenzylidene) benzenamine in different ways and compare of the way of synthesize it. As a result, microwave irradiation is the simple way to synthesis this Schiff base. Full article
Open AccessShort Note
Synthesis of 1-benzyl-3-chloro-4-(3,4,5-trimethoxyphenyl)azetidin-2-one
Molbank 2006, 2006(6), M513; https://doi.org/10.3390/M513 - 01 Dec 2006
Viewed by 1807
Abstract
Combretastatin A-4, isolated from a South African tree Combretum caffrum, is one of the most potent anti-tomour agents. In this paper, an analogue of Combretastatin A-4 was synthesized in order to improve the anti-tumour activity. Compound was characterized by IR and 1HNMR. Full article
Open AccessShort Note
Spectroscopic and ab-initio study of schiff base ligand 4-[(2-hydroxyethylamino)-methylene]-5-methyl-2-p-tolyl-2,4-dihydro-pyrazol-3-one
Molbank 2006, 2006(6), M512; https://doi.org/10.3390/M512 - 01 Dec 2006
Viewed by 1996
Abstract
Pyrazolone ring systems represent an important class of compounds [1] not only for their theoretical interest but also for their number of application in diverse area [2-6].[...] Full article
Open AccessShort Note
4,4'-Diethylaminoethoxyhexestrol dihydrochloride
Molbank 2006, 2006(6), M511; https://doi.org/10.3390/M511 - 01 Dec 2006
Cited by 1 | Viewed by 2115
Abstract
The bis-diethylaminoethylether of hexestrol has been shown to be hypocholesteremic by inhibiting the reduction of desmosterol to cholesterol.[...] Full article
Open AccessShort Note
Synthesis of 2-Chloro-3-(2-naphthyloxy)quinoxaline
Molbank 2006, 2006(6), M510; https://doi.org/10.3390/M510 - 01 Dec 2006
Viewed by 1811
Abstract
A mixture of 2,3-dichloroquinoxaline 1 [1] (1.0 g, 5 mmol) and 2-naphthol (0.72 g, 5 mmol) in pyridine (10 mL) was heated to 130°C for 3 h, with magnetic stirring, to give a dark-brown reaction mixture.[...] Full article
Open AccessShort Note
Synthesis of N, N-Dimethyl-3-phenoxyquinoxalin-2-amine
Molbank 2006, 2006(6), M509; https://doi.org/10.3390/M509 - 01 Dec 2006
Viewed by 1863
Abstract
The two chloro groups in 2,3-dichloroquinoxaline 1 can be displaced by nucleophiles, a process that may take place in a stepwise manner [1].[...] Full article
Open AccessShort Note
Synthesis of 2-(1,4-oxazino[2,3-b]quinoxalin-4-yl)ethanol
Molbank 2006, 2006(6), M508; https://doi.org/10.3390/M508 - 01 Dec 2006
Cited by 1 | Viewed by 2017
Abstract
A mixture of 2,3-dichloroquinoxaline 1[1] (5.0 g, 25 mmol) and diethanolamine 2 (12 mL, 125 mmol) was heated to 130° C for 3 h, with magnetic stirring.[...] Full article
Open AccessShort Note
3β-Tosyloxy-elemo-lanost-8-en-24-one
Molbank 2006, 2006(6), M507; https://doi.org/10.3390/M507 - 01 Dec 2006
Viewed by 2402
Abstract
The sodium periodate is prepared in situ with equimolecular quantity of soda NaOH (0.5g; 12.50 mmol) and periodic acid H5IO6 (2.85g; 12.50 mmol), the mixture is stirred at 0°C.[...] Full article
Open AccessShort Note
3β-Acetoxy-elemo-lanost-8-en-24-one
Molbank 2006, 2006(6), M506; https://doi.org/10.3390/M506 - 01 Dec 2006
Viewed by 2257
Abstract
The sodium periodate is prepared in situ with a equimolecular quantity of soda NaOH (0.5g; 12.50 mmol) and periodic acid H5IO6 (2.85g; 12.50 mmol), the mixture is stirred at 0°C. After 15 min, 5 ml of CCl4, 5 ml of [...] Read more.
The sodium periodate is prepared in situ with a equimolecular quantity of soda NaOH (0.5g; 12.50 mmol) and periodic acid H5IO6 (2.85g; 12.50 mmol), the mixture is stirred at 0°C. After 15 min, 5 ml of CCl4, 5 ml of H3CCN and 93.03mg (0.12mmol) of ruthenium trichloride1,2 were added.[...] Full article
Open AccessShort Note
4α,14α,Dimethyl-5α-cholest-8-en-3-one thiadiazoline
Molbank 2006, 2006(6), M505; https://doi.org/10.3390/M505 - 01 Dec 2006
Cited by 1 | Viewed by 2567
Abstract
The compound 2 (0.21g, 0.25mmol) was dissolved in 1ml of pyridine and 1ml of acetic anhydride1,2.[...] Full article
Open AccessShort Note
4α,14α,Dimethyl-5α-cholest-8-en-3-one thiosemicarbazone
Molbank 2006, 2006(6), M504; https://doi.org/10.3390/M504 - 01 Dec 2006
Viewed by 3208
Abstract
The compound 2 was prepared from equimolecular quantity of 1 (1g, 2.43 mmol), derivative triterpene resulting from Euphorbia officinarum1, and thiosemicarbazide2,3 dissolved in ethanol with several drops of conc. H2SO4.[...] Full article
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