Zobrazeno 1 - 10 of 48 pro vyhledávání: '"David W. Macomber"'
1
Preparation of dyes derived from Eriochrome Red B and Acid Alizarin Violet N soluble in organic solvents
Autor: Alan R. Katritzky, David W. Macomber, Terrance P. Smith, Bogumila Rachwal, Stanislaw Rachwal
Publikováno v: Recueil des Travaux Chimiques des Pays-Bas. 112:552-556
Both hydroxy groups of Eriochrome Red B are protected by acetylation and the sulfonic acid group is converted to the sulfonyl chloride with phosphorus pentachloride. Reaction with dibutylamine or N-butylbenzeneethanamine followed by the deprotection
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::85e840048482cc657e396a3c4df7fcaf
https://doi.org/10.1002/recl.19931121007
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2
Crystal structure of a (?-bis(carbene))dimetal complex of tungsten
Autor: Mong Liang, David W. Macomber, Robin D. Rogers
Publikováno v: Journal of Crystallographic and Spectroscopic Research. 23:623-628
The (μ-bis(carbene))ditungsten complex, (CO)5W{(C(OCH2Ph)C(CH2C2H3)(Me)CH2CH2C(OCH2Ph)}W(CO)5 (1) is only the fifth such complex to be crystallographically characterized. The steric demands of one side of the bis(carbene) ligand gives rise to small,
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::278bdc5eaab059e60c38b6899ac51b1e
https://doi.org/10.1007/bf01325184
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3
A Novel Method for the Preparation of 3-Amino-4-hydroxybenzenesulfonamide Precursors of 'Acid Alizarin Violet N' Derivatives
Autor: Terrance P. Smith, Jing Wu, Alan R. Katritzky, Stanislaw Rachwal, David W. Macomber
Publikováno v: Synthetic Communications. 23:405-417
Chlorosulfonation of 2-nitroanisole gave 4-methoxy-3-nitrobenzenesulfonyl chloride (7) which was converted with N-butyl(3-phenylpropyl) amine into benzenesulfonamide (8). Hydrolysis of the ether and reduction of the nitro group of 8 followed by diazo
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9c42acf5119e90bdf2c0cd941fca798c
https://doi.org/10.1080/00397919308009795
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4
Naphth[1,2-d]oxazole intermediates in the preparation of 3-hydroxy-4-(1-alkyl-3-methyl-5-hydroxy-4-pyrazolyl)-azo-1-naphthalenesulfonamide dyes
Autor: Bogumila Rachwal, Alan R. Katritzky, Terrance P. Smith, Stanislaw Rachwal, David W. Macomber
Publikováno v: Journal of Heterocyclic Chemistry. 30:135-139
Acylation of 4-amino-3-hydroxy-1-naphthalenesulfonic acid (3) with benzoyl chloride in pyridine gave pyridinium 3-hydroxy-4-(N-benzoylamino)-1-naphthalenesulfonate (12) which was converted by thionyl chloride followed by diethylamine into N,N-diethyl
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::288a493f5ec43ec6492f2a7f720e9f7d
https://doi.org/10.1002/jhet.5570300124
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5
ChemInform Abstract: Synthetic and Structural Studies on New Vinylcyclopentadienyl Derivatives of Titanium, Iron and Thallium
Autor: David W. Macomber, Masao Ogasa, Robin D. Rogers, Marvin D. Rausch, Daniel T. Mallin, Andrew N. Rollins
Publikováno v: ChemInform. 22
An improved procedure for the preparation of vinylcyclopentadienyllithium (1) from 6-methylfulvene and lithium diisopropylamide in THF solution has been developed. Reaction of 1 with thallium ethoxide in THF has produced vinylcyclopentadienylthallium
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3f5e4a6a4a3d55c4d13f381681ca351d
https://doi.org/10.1002/chin.199122210
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7
ChemInform Abstract: A Novel Method for the Preparation of 3-Amino-4- hydroxybenzenesulfonamide Precursors of 'Acid Alizarin Violet N' Derivatives
Autor: Alan R. Katritzky, Stanislaw Rachwal, Jing Wu, David W. Macomber, Terrance P. Smith
Publikováno v: ChemInform. 24
Chlorosulfonation of 2-nitroanisole gave 4-methoxy-3-nitrobenzenesulfonyl chloride (7) which was converted with N-butyl(3-phenylpropyl) amine into benzenesulfonamide (8). Hydrolysis of the ether and reduction of the nitro group of 8 followed by diazo
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::27fe036b501012b2b25d5a437401eb94
https://doi.org/10.1002/chin.199333137
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8
ChemInform Abstract: Naphth(1,2-d)oxazole Intermediates in the Preparation of 3-Hydroxy-4-( 1-alkyl-3-methyl-5-hydroxy-4-pyrazolyl)-azo-1-naphthalenesulfonamide Dyes
Autor: Alan R. Katritzky, Stanislaw Rachwal, Bogumila Rachwal, David W. Macomber, Terrance P. Smith
Publikováno v: ChemInform. 24
Acylation of 4-amino-3-hydroxy-1-naphthalenesulfonic acid (3) with benzoyl chloride in pyridine gave pyridinium 3-hydroxy-4-(N-benzoylamino)-1-naphthalenesulfonate (12) which was converted by thionyl chloride followed by diethylamine into N,N-diethyl
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1464497a87f346d8ff82ea9841be6d50
https://doi.org/10.1002/chin.199336239
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9
ChemInform Abstract: Preparation of Dyes Derived from Eriochrome Red B and Acid Alizarin Violet N Soluble in Organic Solvents
Autor: Stanislaw Rachwal, Terrance P. Smith, David W. Macomber, Alan R. Katritzky, Bogumila Rachwal
Publikováno v: ChemInform. 25
Both hydroxy groups of Eriochrome Red B are protected by acetylation and the sulfonic acid group is converted to the sulfonyl chloride with phosphorus pentachloride. Reaction with dibutylamine or N-butylbenzeneethanamine followed by the deprotection
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3c8b81b997ce01c3341be528ef1e1cf7
https://doi.org/10.1002/chin.199406208
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