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Molbank, Volume 2001, Issue 3 (December 2001)

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Open AccessShort Note Tetraethyl(pyrrolidine-2,2-diyl)bisphosphonate
Molecules 2001, 6(12), M275; https://doi.org/10.3390/M275
Received: 1 December 2001 / Accepted: 15 December 2001 / Published: 20 December 2001
Cited by 2 | PDF Full-text (13 KB) | Supplementary Files
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
Received: 1 December 2001 / Accepted: 15 December 2001 / Published: 20 December 2001
Cited by 2 | PDF Full-text (13 KB) | Supplementary Files
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
Received: 20 November 2001 / Accepted: 15 December 2001 / Published: 20 December 2001
PDF Full-text (13 KB) | Supplementary Files
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
Received: 18 June 2001 / Accepted: 15 December 2001 / Published: 20 December 2001
PDF Full-text (13 KB) | Supplementary Files
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
Received: 18 June 2001 / Accepted: 15 December 2001 / Published: 20 December 2001
PDF Full-text (13 KB) | Supplementary Files
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
Received: 27 October 2001 / Accepted: 15 December 2001 / Published: 20 December 2001
PDF Full-text (13 KB) | Supplementary Files
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
Received: 27 October 2001 / Accepted: 15 December 2001 / Published: 20 December 2001
PDF Full-text (13 KB) | Supplementary Files
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
Received: 14 June 2001 / Accepted: 15 December 2001 / Published: 20 December 2001
PDF Full-text (13 KB)
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
Received: 14 June 2001 / Accepted: 15 December 2001 / Published: 20 December 2001
PDF Full-text (13 KB) | Supplementary Files
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
Received: 8 June 2001 / Accepted: 15 December 2001 / Published: 20 December 2001
PDF Full-text (13 KB) | Supplementary Files
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
Received: 8 June 2001 / Accepted: 15 December 2001 / Published: 20 December 2001
Cited by 1 | PDF Full-text (13 KB) | Supplementary Files
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
Received: 8 June 2001 / Accepted: 15 December 2001 / Published: 20 December 2001
PDF Full-text (13 KB) | Supplementary Files
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
Received: 5 June 2001 / Accepted: 15 December 2001 / Published: 20 December 2001
Cited by 2 | PDF Full-text (13 KB) | Supplementary Files
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
Received: 5 June 2001 / Accepted: 15 December 2001 / Published: 20 December 2001
Cited by 1 | PDF Full-text (13 KB) | Supplementary Files
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
Received: 5 June 2001 / Accepted: 15 December 2001 / Published: 20 December 2001
PDF Full-text (13 KB) | Supplementary Files
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)
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