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Volume 2001, June

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Molbank, Volume 2001, Issue 3 (December 2001) – 36 articles

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Open AccessShort Note
Tetraethyl(pyrrolidine-2,2-diyl)bisphosphonate
Molecules 2001, 6(12), M275; https://doi.org/10.3390/M275 - 20 Dec 2001
Cited by 2
Abstract
The synthesis of the title compound is already described [1, 2] and we report here the fully optimized procedure.[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note
(4aS,6R,8aS)-4a,5,9,10,11,12-Hexahydro-6H-benzofuro[3a,3,2-ef][2]benzazepine-3,6-diol (Norsanguinine)
Molecules 2001, 6(12), M274; https://doi.org/10.3390/M274 - 20 Dec 2001
Cited by 2
Abstract
Norsanguinine (2) is an alkaloid isolated from the bulbs of L. sanguinea [1] and synthesized as racemate by Kita [2].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note
5-Phenyl-3-[1-(phenylsulphonyl)-hexyl]-1,2,4-triazine
Molecules 2001, 6(12), M273; https://doi.org/10.3390/M273 - 20 Dec 2001
Abstract
As part of ongoing research programme we synthesised the title compound as valuable intermediate for intermolecular cycloaddition reactions, leading to biologically active heterocycles.[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note
5-Methyl-1,3-diphenylpyrazolo[4,3-d]oxazin-7-one
Molecules 2001, 6(12), M272; https://doi.org/10.3390/M272 - 20 Dec 2001
Abstract
In a similar manner to the reported procedure [1,2], b-pyrazolic amino acid [3] (2 mmoles) was dissolved in acetic anhydride.[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note
6-Methyl-1,3-diphenylpyrazolo[3,4-d]oxazin-4-one
Molecules 2001, 6(12), M271; https://doi.org/10.3390/M271 - 20 Dec 2001
Cited by 2
Abstract
b-Pyrazolic amino acid [1] (2 mmoles) was dissolved in acetic anhydride [2].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note
2-(2'-Cinnamyl-1',3'-oxazolyl)-1,3-dithiolane
Molecules 2001, 6(12), M270; https://doi.org/10.3390/M270 - 20 Dec 2001
Abstract
To a mixture of 2-cinnamyl-1,3-oxazole-4-carboxaldehyde [1,2] (2.8 g, 14 mmol) and ethanedithiol (2.3 g, 21 mmol) in methylene chloride (100 ml) was added boron trifluoride etherate (2.8 g, 21 mmol).[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note
2-Cinnamyl-1,3-oxazole-4-carboxaldehyde p-Toluenesulfonyl Hydrazone
Molecules 2001, 6(12), M269; https://doi.org/10.3390/M269 - 20 Dec 2001
Cited by 1
Abstract
To a stirred solution of p-toluenesulfonhydrazide (0.61g, 3.3 mmol) in methanol/water (6:4, 20 ml) at 60°C was added 2-cinnamyl-1,3-oxazole-4-carboxaldehyde [1](0.50 g, 2.5 mmol).[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note
(4-Isopropenyl-cyclohex-1-enyl)acetic Acid Ethylester
Molecules 2001, 6(12), M268; https://doi.org/10.3390/M268 - 20 Dec 2001
Abstract
The carbonylation of allylic componds catalyzed by transition metal complexes under atmospheric pressure of CO is one of the most attractive tools to synthesize the b ,g - unsaturated carbonyl compounds, which are versatile building blocks [1-2].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note
3-(4’-Methyl-3’-oxocyclohex-1’-enyl)butyric Acid Methyl Ester
Molecules 2001, 6(12), M267; https://doi.org/10.3390/M267 - 20 Dec 2001
Abstract
The alkoxycarbonylation of terpenic olefins which affords the corresponding esters is an elegant synthesis [1-2].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note
3,5-Bis(trimethylsilyl)-4-thiophenoxypyridine
Molecules 2001, 6(12), M266; https://doi.org/10.3390/M266 - 20 Dec 2001
Cited by 1
Abstract
Reaction of 3,5-bis(trimethylsilyl)-4-chloropyridine [1] with thiophenol gave 3,5-bis(trimethylsilyl)-4-thiophenoxypyridine, a potential precursor to novel pyridinylidene derived nonlinear optical materials.[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note
3,5-Bis(trimethylsilyl)-1-methyl-4-thiophenoxypyridinium Iodide
Molecules 2001, 6(12), M265; https://doi.org/10.3390/M265 - 20 Dec 2001
Cited by 1
Abstract
3,5-Bis(trimethylsilyl)-4-thiophenoxypyridine is readily converted to its pyridinium methiodide.[...] Full article
Open AccessShort Note
6-Amino-1-(2’-deoxy-b-D-ribofuranosyl)-4,5-dihydro-8H-imidazo[4,5-e][1,3]diazepine-4,8-dione
Molecules 2001, 6(12), M264; https://doi.org/10.3390/M264 - 20 Dec 2001
Abstract
The starting methyl 1-(2’-deoxy-b-D-ribofuranosyl)imidazole-4,5-dicarboxylate (1) was prepared by deoxygenation of the corresponding riboside, employing the literature procedure [1].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note
2-(b-D-Ribofuranosyl)-4-(3-nitrophenylazo)-5-trifluoromethyl-2,4-dihydro-pyrazol-3-one
Molecules 2001, 6(12), M263; https://doi.org/10.3390/M263 - 20 Dec 2001
Cited by 2
Abstract
The desired compound 2 was obtained by complete deprotection of the acetylated nucleoside 1 [1] using triethylamine [2].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note
2-(2`,3`,5`-Tri-O-acetyl-b-D-ribofuranosyl)-4-(3-nitrophenylazo)-5-trifluoromethyl-2,4-dihydropyrazol-3-one
Molecules 2001, 6(12), M262; https://doi.org/10.3390/M262 - 20 Dec 2001
Cited by 1
Abstract
To a solution of 4-(3-nitrophenylazo)-5-trifluoromethyl-2,4-dihydropyrazol-3-one 1 [1] (0.903 g, 3 mmol) in hexamethyldisilazine (HMDS) (25 ml) was added few crystals of anhydrous ammonium sulfate [2].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note
4-(3-Nitrophenylazo)-5-trifluoromethyl-2,4-dihydropyrazol-3-one
Molecules 2001, 6(12), M261; https://doi.org/10.3390/M261 - 20 Dec 2001
Cited by 2
Abstract
To a cold solution of 5-trifluoromethyl-2,4-dihydropyrazol-3-one [1,2] (0.76 g, 5 mmol) in ethanol (25 ml) containing sodium acetate (0.82 g, 10 mol), 3-nitrobenzenediazonium chloride ( 5 mmol) was added dropwise with stirring at 0-5°C.[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note
Reduction of 5-Nitrosalicylic Acid in Water to Give 5-Amino-salicylic Acid*
Molecules 2001, 6(12), M260; https://doi.org/10.3390/M260 - 20 Dec 2001
Cited by 4
Abstract
In the course of a general programme aimed to find new protocols for environmentally friend chemistry [1-3] we were looking for a clean, high yielding method of reduction of 5-nitrosalicylic acid (1) to 5-aminosalicylic acid (5-ASA) in industrial scale [4].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note
(4-Formylbenzylidene)-4-ferrocenylaniline
Molecules 2001, 6(12), M252; https://doi.org/10.3390/M252 - 20 Dec 2001
Cited by 1
Abstract
The reaction of 4-ferrocenylaniline with 1,4-benzenedicarboxaldehyde in an equimolar ratio in dilute solution, or with a large excess of the aniline, often gives the diimine product.[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note
(4-hydroxybenzylidene)-4-ferrocenylaniline
Molecules 2001, 6(12), M251; https://doi.org/10.3390/M251 - 20 Dec 2001
Cited by 8
Abstract
(4-Hydroxybenzylidene)-4-ferrocenylaniline has a free hydroxyl group and it can react with carboxylic acids to form esters and it is thus a key intermediate for the synthesis of mono-substituted ferrocenecontaining liquid crystal [1] with Schiff's base and ester group.[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note
4-Ferrocenylaniline
Molecules 2001, 6(12), M250; https://doi.org/10.3390/M250 - 20 Dec 2001
Cited by 18
Abstract
The reduction of 4-nitropheneylferrocene with tin in acidic condition gives 4-ferrocenylaniline, which is an important intermediate for the synthesis of ferrocene-containing Schiff's base liquid crystals [1].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note
4-Nitrophenylferrocene
Molecules 2001, 6(12), M249; https://doi.org/10.3390/M249 - 20 Dec 2001
Cited by 26
Abstract
4-Nitrophenylferrocene is a candidate for the study of second order non-linear optical materials containing electron donating and electron withdrawing groups in the molecule.[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note
4-Formylphenyl 4-Ferrocenylbenzoate
Molecules 2001, 6(12), M247; https://doi.org/10.3390/M247 - 20 Dec 2001
Cited by 3
Abstract
Ferrocene unit is comparatively large volume and it needs a longer molecular shape in geometry in to support the liquid crystal property [1].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note
4-Ferrocenylbenzoic Acid
Molecules 2001, 6(12), M246; https://doi.org/10.3390/M246 - 20 Dec 2001
Cited by 17
Abstract
Ferrocene-containing liquid crystals, non-linear optical materials and magnetic materials are of considerable interests for their high thermal stability, tunable redox characteristics and structural variability [1].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note
4-(Benzylthio)acetophenone
Molecules 2001, 6(12), M244; https://doi.org/10.3390/M244 - 20 Dec 2001
Cited by 1
Abstract
During the course of our research on preparing parallel dipole-aligned crystals [1-2], we needed to prepare the previously unreported compound 4-benzyl-sulfonylacetophenone.[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note
3-Ethoxycarbonyl-1,4-dihydro-2-methylquinoline
Molecules 2001, 6(12), M243; https://doi.org/10.3390/M243 - 20 Dec 2001
Abstract
Compound 1 [1] (1.23 g, 4.94 mmol ) and 0.1 g of Pd/C (10%) in 50 ml of ethanol are introduced into an hydrogenation reactor.[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note
[3,5-Bis(trimethylsilyl)-1-methyl-4(1H)-pyridinylidene]-dicyanomethane
Molecules 2001, 6(12), M242; https://doi.org/10.3390/M242 - 20 Dec 2001
Abstract
3,5-Bis(trimethylsilyl)-1-methyl-4-thiophenoxypyridinium iodide reacts with the anion of malononitrile to give the corresponding dicyanomethylidene-1,4-dihydropyridine.[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note
3,5-Bis(trimethylsilyl)-4-chloropyridine
Molecules 2001, 6(12), M241; https://doi.org/10.3390/M241 - 20 Dec 2001
Cited by 1
Abstract
In connection with our studies of the nonlinear optical properties of pyridinylidene compounds we required some pyridine derivatives bearing bulky substituents at the 3- and 5-positions in addition to having an efficient leaving group at the 4-position.[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note
9-Methyl-3-phenyl-4H,6H--[1,2,4]triazino[5,4-b][1,3,4]thiadiazin-6-one
Molecules 2001, 6(12), M237; https://doi.org/10.3390/M237 - 20 Dec 2001
Cited by 2
Abstract
4-Amino-6-methyl-5-thio-1,2,4-triazin-3-one 1 was reacted with phenacyl bromide in the presence of triethylamine in acetonitrile to give the corresponding 5-phenacylthio derivative 2.[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note
4-Hydroxyphenyl 4-Ferrocenylbenzoate
Molecules 2001, 6(12), M248; https://doi.org/10.3390/M248 - 25 May 2001
Abstract
The reaction of 4-ferrocenylbenzoyl chloride with 1,4-dihydroxybenzene gives 4-hydroxyphenyl 4-ferrocenylbenzoate, which contains a free hydroxyl group and it can be used for the synthesis of ester mono-substituted liquid crystal and hydrogen-bonded supra-molecular liquid crystals [1].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note
Trans Acetic Acid 5-isopropyl-2-methyl Cyclohex-2-enyl Ester (Trans Carvyl Acetate)
Molecules 2001, 6(12), M240; https://doi.org/10.3390/M240 - 25 May 2001
Abstract
To a red solution of Li2PdCl4, prepared in situ by mixing LiCl (30.8 mg, 0.72 mmol) and PdCl2 (43 mg, 0.24 mmol) in 20 mL of AcOH stirred at 85°C, was added Cu(OAc)2 (4 g, 20 mmol) and stirred for 30 mn.[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note
4,7,7-Trimethyl-bicyclo [2.2.1]heptan-2-ol
Molecules 2001, 6(12), M239; https://doi.org/10.3390/M239 - 25 May 2001
Abstract
A mixture of Pd(acac)2 (41.26 mg, 0.12 mmol) and CuCl2 (168 mg, 1.25 mmol) [1] in 10 mL of 1,2-dimethoxyethan (DME) was stirred for 30 mn at 80°C under oxygen atmosphere, was added a -pinene (425 mg, 3.12 mmol).[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note
3-Amino-9-methyl-2H,6H--[1,2,4]triazino[5,4-b][1,3,4]thiadiazin-6-one
Molecules 2001, 6(12), M238; https://doi.org/10.3390/M238 - 25 May 2001
Cited by 2
Abstract
Condensation of 4-amino-6-methyl-5-thio-1,2,4-triazin-3-one 1 with chloro acetonitrile in the presence of triethey amine afforded the corresponding 5-thiocyanomethyl derivative 2.[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note
ar-Himachalene
Molecules 2001, 6(12), M236; https://doi.org/10.3390/M236 - 25 May 2001
Cited by 7
Abstract
The reaction of dehydrogenation on the natural mixture of himachalene is already known [1].[...] Full article
Open AccessShort Note
Bis[(3-hydroxymethyl-5-methyl pyrazol)-1-yl Thiocarbonyl] Disulfide
Molecules 2001, 6(12), M235; https://doi.org/10.3390/M235 - 25 May 2001
Cited by 1
Abstract
This experiment is performed according to literature method [1-4].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note
Bis[(3-methoxycarbonyl-5-methyl pyrazol)-1-yl Thiocarbonyl] Disulfide
Molecules 2001, 6(12), M234; https://doi.org/10.3390/M234 - 25 May 2001
Cited by 1
Abstract
This experiment is performed according to literature method [1-4].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note
Bis[(3,5-dimethyl pyrazol)-1-yl Thiocarbonyl)] Disulfide
Molecules 2001, 6(12), M233; https://doi.org/10.3390/M233 - 25 May 2001
Cited by 1
Abstract
This experiment is performed according to literature method [1-4].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
Open AccessShort Note
Bis(N,N-dibutylthiocarbamoyl) Disulfide
Molecules 2001, 6(12), M232; https://doi.org/10.3390/M232 - 25 May 2001
Cited by 4
Abstract
This experiment is performed according to literature method [1-3].[...] Full article
(This article belongs to the Section Molbank Section of Molecules, 1997-2001)
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