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Volume 2001, December
 
 

Molbank, Volume 2002, Issue 1 (December 2002) – 22 articles

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Research

40 KiB  
Short Note
(E)-2-[2-(4'-Methyl-[2,2']bipyridinyl-4-yl)-vinyl]-[1,4]benzoquinone
by Harald Zieg and Burkhard Koenig
Molbank 2002, 2002(1), M276; https://doi.org/10.3390/M276 - 16 Feb 2003
Cited by 41 | Viewed by 2583
Abstract
Lehn et al. [1] have reported the synthesis of a compound similar to 2, which has a saturated ethano bridged between the 2,2'-bipyridine and the para-benzoquinone moiety.[...] Full article
48 KiB  
Short Note
Chiral Methyl 7,8,9-Trichloro-6,7,8,9-tetrahydro-5-oxopyrido-[2,3-a]indolizine-10-carboxylates (OPIC)
by Najib Ben Larbi, Maria Daoudi, Najat Sam, Mostafa Mimouni, Sghir Elkadiri and Taibi Ben-Hadda
Molbank 2002, 2002(1), M277; https://doi.org/10.3390/M277 - 16 Feb 2003
Cited by 41 | Viewed by 3704
Abstract
The 3,3'-dihydoxycarbonyl-2,2'-bipyridine acid 1 used for the preparation of diastereoisomeric compounds 2a-b has been obtained by described method of Blau [1].[...] Full article
65 KiB  
Short Note
2-(1,3-Benzodioxol-5-yl)ethylene-1,1,2-tricarbonitrile
by Abdullah Mohamed Asiri
Molbank 2002, 2002(1), M278; https://doi.org/10.3390/M278 - 16 Feb 2003
Cited by 41 | Viewed by 3242
Abstract
2-(1,3-benzodioxol-5-yl)ethylene-1,1,2-tricarbonitrile (2), was prepared from (1,3-benzodioxol- 5-ylmethylene)malononitrile (1) and sodium cyanide, followed by oxidation using bromine [1,2].[...] Full article
34 KiB  
Short Note
2-[(2-Isopropyl-5-methylphenoxy)acetyl]-N-phenylhydrazine Carbothioamide
by Abdullah Mohamed Asiri
Molbank 2002, 2002(1), M279; https://doi.org/10.3390/M279 - 16 Feb 2003
Cited by 41 | Viewed by 3501
Abstract
The phenylthiosemicarbazide derivative 3 was prepared from 2-isopropyl-5-methylphenoxyacyl hydrazide (1) and phenyl isothiocyanate (2) [1,2].[...] Full article
33 KiB  
Short Note
5-[(2-Isopropyl-5-methylphenoxy)methyl]-4-phenyl-4H-1,2,4-triazole-3-thiol
by Abdullah Mohamed Asiri
Molbank 2002, 2002(1), M280; https://doi.org/10.3390/M280 - 16 Feb 2003
Cited by 41 | Viewed by 3339
Abstract
The triazole derivative 2 was prepared from 2-[(2-isopropyl-5-methylphenoxy)acetyl]-N-phenylhydrazine carbothioamide (1) by heating under reflux with aqueous NaOH [1,2].[...] Full article
34 KiB  
Short Note
(2Z)-3-(3,4-Dimethoxyphenyl)-2-(4-methylphenyl)acrylonitrile
by Abdullah Mohamed Asiri
Molbank 2002, 2002(1), M281; https://doi.org/10.3390/M281 - 16 Feb 2003
Cited by 41 | Viewed by 3402
Abstract
(2Z)-3-(3,4-dimethoxyphenyl)-2-(4-methylphenyl)acrylonitrile (3) was prepared by Knoevenagel condensation of 3,4-dimethoxybenzaldehyde (1) and 4-methylphenylacetonitrile (2) in ethanol using KOH as a base [1,2].[...] Full article
33 KiB  
Short Note
(1-(Phenanthrolo[5,6-d]imidazol-2-yl)-3-(4,5-diphenylimidazol-2-yl)benzene
by Hui Chao, Cai-Wu Jiang, Hao Zhang and Liang-Nian Ji
Molbank 2002, 2002(1), M282; https://doi.org/10.3390/M282 - 20 Feb 2003
Cited by 41 | Viewed by 2843
Abstract
2-(3-Formylphenyl)imidazo[4,5-f][1,10]phenanthroline was prepared by a previously published method [1].[...] Full article
34 KiB  
Short Note
1-(Phenanthrolo[5,6-d]imidazol-2-yl)-3-(acenaphthro[4,5-d]imidazol-2-yl)benzene
by Hui Chao, Cai-Wu Jiang, Hao Zhang and Liang-Nian Ji
Molbank 2002, 2002(1), M283; https://doi.org/10.3390/M283 - 20 Feb 2003
Cited by 41 | Viewed by 2537
Abstract
2-(3-formylphenyl)imidazo[4,5-f][1,10]phenanthroline was prepared by a previously published method [1].[...] Full article
33 KiB  
Short Note
1-(Phenanthrolo[5,6-d]imidazol-2-yl)-3-(phenanthro[5,6-d]imidazol-2-yl)benzene
by Hui Chao, Cai-Wu Jiang, Xiang-Li Wang and Liang-Nian Ji
Molbank 2002, 2002(1), M284; https://doi.org/10.3390/M284 - 20 Feb 2003
Cited by 41 | Viewed by 2761
Abstract
2-(3-Formylphenyl)imidazo[4,5-f][1,10]phenanthroline was prepared by a previously published method [1].[...] Full article
27 KiB  
Short Note
2-(2-Hydroxy-5-methyl-3-formylphenyl)-imidazo[4,5-f][1,10]-phenanthroline
by Hui Chao, Cai-Wu Jiang, Xian-Lan Hong and Liang-Nian Ji
Molbank 2002, 2002(1), M285; https://doi.org/10.3390/M285 - 20 Feb 2003
Cited by 41 | Viewed by 3162
Abstract
1,10-phenanthroline-5,6-dione was prepared by a previously published method [1].[...] Full article
33 KiB  
Short Note
2’-(3’’,4’’-Methylenedioxyphenyl)imidazo[4’,5’-f]1,10-phenanthroline
by Zhong-Ming Wang, Yong-Mei Hao, Jian-Zhong Liu and Lian-Nian Ji
Molbank 2002, 2002(1), M286; https://doi.org/10.3390/M286 - 20 Feb 2003
Cited by 41 | Viewed by 3367
Abstract
1,10-Phenanthroline-5,6-dione was prepared by a previously published procedure [1].[...] Full article
28 KiB  
Short Note
Ethyl 3-Chloropyrazine-2-carboxylate
by Norbert Haider
Molbank 2002, 2002(1), M287; https://doi.org/10.3390/M287 - 20 Feb 2003
Cited by 41 | Viewed by 2463
Abstract
Free-radical alkoxycarbonylation of protonated pi-deficient hetarenes is a useful method for the introduction of ester functionalities into such systems [1], especially when the reaction is carried out in a two-phase solvent system in order to suppress polysubstitution [2].[...] Full article
30 KiB  
Short Note
2-Bromo-N1, N1, N4, N4-tetramethyl-benzene-1,4-diamine
by Harald Zieg, Wolfgang Pitsch and Burkhard Koenig
Molbank 2002, 2002(1), M288; https://doi.org/10.3390/M288 - 24 Feb 2003
Cited by 41 | Viewed by 2640
Abstract
Compound 3 has been reported in a patent1 as a catalyst for hydrogen peroxide bleaching in photographic processing methods, but no synthesis or spectroscopic data are available in the chemical literature.[...] Full article
31 KiB  
Short Note
3(2,4-Dinitrobenzyl)-2,4-pentanedione
by Harald Zieg, Wolfgang Pitsch and Burkhard Koenig
Molbank 2002, 2002(1), M289; https://doi.org/10.3390/M289 - 24 Feb 2003
Cited by 41 | Viewed by 2873
Abstract
Substituted pentanediones are widely used as ligands for metal complexes.[...] Full article
24 KiB  
Short Note
2-(2-Bromophenyl)-1-(4-methoxyphenyl)ethanone
by Matthias Treu and Ulrich Jordis
Molbank 2002, 2002(1), M290; https://doi.org/10.3390/M290 - 24 Feb 2003
Cited by 41 | Viewed by 2487
Abstract
To anhydrous AlCl3 (27.35 g, 205 mmol) and anisole (24.11 g, 223 mmol) in dry chloroform (300 mL) 2-bromobenzeneacetyl chloride [1] (43.4 g, 186 mmol) in dry chloroform (100 mL) was added over 30 min at 0 °C and stirred at ambient [...] Read more.
To anhydrous AlCl3 (27.35 g, 205 mmol) and anisole (24.11 g, 223 mmol) in dry chloroform (300 mL) 2-bromobenzeneacetyl chloride [1] (43.4 g, 186 mmol) in dry chloroform (100 mL) was added over 30 min at 0 °C and stirred at ambient temperature for 15 h.[...] Full article
24 KiB  
Short Note
[4-(2-Bromoethyl)phenoxy]-(1,1-dimethylethyl)dimethylsilane
by Matthias Treu and Ulrich Jordis
Molbank 2002, 2002(1), M291; https://doi.org/10.3390/M291 - 24 Feb 2003
Cited by 41 | Viewed by 2348
Abstract
To 4-(2-bromoethyl)phenol [1] (28.75 g, 143 mmol) and tert-butyldimethylchlorosilane (23.64 g, 159 mmol) in dry THF (600 mL), imidazole (24.27 g, 357 mmol) was added at 15 °C over 10 min and stirred at ambient temperature.[...] Full article
249 KiB  
Short Note
2-Bromo-5-hydroxy-4-methoxybenzenemethanol
by Matthias Treu and Ulrich Jordis
Molbank 2002, 2002(1), M292; https://doi.org/10.3390/M292 - 24 Feb 2003
Cited by 41 | Viewed by 2182
Abstract
2-Bromo-5-hydroxy-4-methoxybenzenemethanol [1] (38.8 g, 166 mmol) in dry chloroform (200 mL) was treated with thionyl chloride (200 mL, 2.76 mol) at 0 °C and stirred for 3 h at ambient temperature.[...] Full article
8 KiB  
Short Note
4-Bromo-5-(chloromethyl)-2-methoxyphenol
by Matthias Treu and Ulrich Jordis
Molbank 2002, 2002(1), M293; https://doi.org/10.3390/m293 - 10 May 2002
Cited by 41 | Viewed by 1852
Abstract
2-Bromo-5-hydroxy-4-methoxybenzenemethanol [1] (38.8 g, 166 mmol) in dry chloroform (200 mL) was treated with thionyl chloride (200 mL, 2.76 mol) at 0 °C and stirred for 3 h at ambient temperature.[...] Full article
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23 KiB  
Short Note
2-Bromo-4-methoxy-5-(1-methylethoxy)benzeneacetic Acid
by Matthias Treu and Ulrich Jordis
Molbank 2002, 2002(1), M294; https://doi.org/10.3390/M294 - 27 Feb 2003
Cited by 41 | Viewed by 2310
Abstract
2-Bromo-4-methoxy-5-(1-methylethoxy)benzeneacetonitrile [1] (5.86 g, 20.6 mmol) was refluxed in 25% NaOH (50 mL)/EtOH (50 mL) for 12 h.[...] Full article
22 KiB  
Short Note
2-Bromo-4-methoxy-5-(1-methylethoxy)benzeneacetyl Chloride
by Matthias Treu and Ulrich Jordis
Molbank 2002, 2002(1), M295; https://doi.org/10.3390/M295 - 27 Feb 2003
Cited by 41 | Viewed by 2290
Abstract
2-Bromo-4-methoxy-5-(1-methylethoxy)benzeneacetic acid [1] (4.00 g, 13.2 mmol) and DMF (100 μL) were stirred in thionyl chloride (40 mL) for 3 h at ambient temperature.[...] Full article
23 KiB  
Short Note
2-Bromo-4-methoxy-5-(1-methylethoxy)benzeneacetic Acid Ethyl Ester
by Matthias Treu and Ulrich Jordis
Molbank 2002, 2002(1), M296; https://doi.org/10.3390/M296 - 27 Feb 2003
Cited by 41 | Viewed by 2323
Abstract
2-Bromo-4-methoxy-5-(1-methylethoxy)benzeneacetic acid chloride [1] (3.00 g, 9.33 mmol) was treated with dry EtOH (50 mL) at 0 °C.[...] Full article
28 KiB  
Short Note
2-[2-[2-Bromo-4-methoxy-5-(1-methylethoxy)phenyl]-1-oxoethyl]-2-[4-(1-methylethoxy)phenylmethyl]propanedioic Acid Dimethyl Ester
by Matthias Treu and Ulrich Jordis
Molbank 2002, 2002(1), M297; https://doi.org/10.3390/M297 - 27 Feb 2003
Cited by 41 | Viewed by 2361
Abstract
To a suspension of NaH (685 mg, 15.7 mmol, 55% in oil, purified by trituration with dry petroleum ether (3 x 30 mL)) in dry THF (30 mL) [[4-(1-methylethoxy)phenyl]methyl]propanedioic acid dimethyl ester [1] (4.00 g, 14.3 mmol) in dry THF (10 mL) was [...] Read more.
To a suspension of NaH (685 mg, 15.7 mmol, 55% in oil, purified by trituration with dry petroleum ether (3 x 30 mL)) in dry THF (30 mL) [[4-(1-methylethoxy)phenyl]methyl]propanedioic acid dimethyl ester [1] (4.00 g, 14.3 mmol) in dry THF (10 mL) was added at 0 °C and stirred for 1 h at ambient temperature.[...] Full article
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