Издательство Taylor&Francis по журналам "Phosphorous and Sulfur and the Related Elements"
Отображаемые элементы 1-20 из 2241
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(Taylor & Francis Group, 1979-03-01)α-Sulphonyl carbanions are known to be good nucleophiles both in intermolecular and in intramolecular reactions1. In the same way gem-dimetalloderivatives of alkyl phenyl sulphones I a,b readily add to aldehydes and ketones ...
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1,2,4,5-TETRAMERCAPTOBENZENE. A Facile Route to the Benzo[1,2-d: 4,5-d']bis[1,3]dithiole Ring System(Taylor & Francis Group, 1982-09-01)The dissolving metal reduction of 1,2,4,5-tetrakis(ethylthio)benzene (2) with alkali metals in various solvents was investigated. Reduction of 2 with lithium in n-propylamine solvent gave 1,2,4,5-Tetramercaptobenzene (1) ...
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(Taylor & Francis Group, 1987-12-01)By the reaction of 1,2-alkadienephosphonic dichlorides with dialkylamines and aliphatic alcohols, the 1,2-alkadienephosphonic amidoesters 2a-k have been prepared. The synthesized 1,2-alkadienephosphonates 2a-k have been ...
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(Taylor & Francis Group, 1983-12-01)Alkyl- or arylbis(trimethylsilyl)phosphines as well as tris(trimethylsilyl)phosphine and the corresponding arsines react with acyl chlorides to give [1-(trimethylsiloxy)alkylidene]phosphines 1 and -arsines 2; most of their ...
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(Taylor & Francis Group, 1977-04-01)Reactions of 2-methyl-3-arylbut-1-en-3-ols (VIII) with benzenesulfenyl chloride were found to give both normal adducts (IX and X) and 1,2-rearrangement products (ketones XI). Yields of XI depend on the electron-releasing ...
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(Taylor & Francis Group, 1982-01-01)The reaction of carbon disulfide with alkaline metal in dimethyl formamide yields 1,3-dithiole-2-thione-4,5-dithiolate 1 and trithiocarbonate in equimolar amounts. 1 in dimethyl formamide solution isomerizes to ...
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(Taylor & Francis Group, 1983-03-01)The synthesis of the 12H-dibenzo[d,g][1,3,2]dioxaphosphocin ring system from 2,2′-alkylidene bisphenols and phosphorus trichloride is described. The 1H NMR shows evidence for long range through-space coupling of the C-12 ...
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(Taylor & Francis Group, 1981-06-01)Novel 1,3,2-diazaphosphorinanes containing the carbonyl group in the ring have been obtained and their properties investigated. The structures of the products were identified by IR-and 31P and 13C NMR spectroscopy.
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(Taylor & Francis Group, 1988-04-01)The reaction of (3-(2-nitroaryl)-1,3,4-oxadiazol-2(3H)ones, 1, with phosphorus pentasulfide in refluxing xylene leads to the formation in good yields of 1,3,4-thiadiazolo(3,2-a)benzimidazoles, 3, which form water soluble ...
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(Taylor & Francis Group, 1988-10-01)Synthesis, properties and NMR spectra of members of the title class of compounds are reported. Synthese, Eigenschaften und NMR-Spektren von Vertretern der [1,3,4]Thiazaphospholidine werden mitgeteilt.
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(Taylor & Francis Group, 1987-04-01)Refluxing a dialkylammonium 4,5-dicyano-1,3,2-diazaphospholate1 with a dialkyl-amine in chloroform gives a 4,6-bis(dialkylamino)-1,3,5-triaza-2-phosphapentalene1 in good yield as the only reaction product. Unsymmetrically ...
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(Taylor & Francis Group, 1985-12-01)The title compounds are formed in the reaction of o-phosphinophenole with N-arylimide chlorides of carbonic acids. The primary adducts of formimmonium chlorides, however, undergo [2 + 2]-cycloaddition to furnish ...
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(Taylor & Francis Group, 1988-03-01)Reductive cyclization of 2-nitrodiphenylamines with trialkyl phosphites provides an efficient one-pot synthesis of 1,3-dihydro-1,3,2-diazaphosphole 2-oxides. Further exhaustive alkylation at elevated temperature is accompanied ...
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(Taylor & Francis Group, 1979-07-01)Die Reaktion von Schwefelkohlenstoff mit Natrium oder Kalium führt zur Bildung äquimolarer Mengen von 1.3-Dithiol-2-thion-4.5-dithiolat (1) und Trithiocarbonat. Durch Zugabe von ZnCl2 und NEt4Br läßt sich (1) stabilisieren. ...
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(Taylor & Francis Group, 1979-03-01)The synthesis of spirochromenes (I and II) and merocyanines (I′ and II′) in 1,3-thiazolidinic and 1,3-thiazinic series, is carried by condensation, in basic medium, of salicylic aldehyd on heterocyclo-ammonium salts issued ...
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(Taylor & Francis Group, 1984-04-01)Phosphorylated 2,5-dihydrothiophene-l,1-dioxides are obtained by 1,4-cycloaddition reaction of sulfur dioxide to dialkyl(3-methyl-1,2,4-pentatrienyl)phosphonates. The structure of the products was established by analyses ...
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(Taylor & Francis Group, 1984-09-01)Isomerization of 1,4-diarylsulfonyl-2-butynes under aprotic conditions and ambient temperatures with mild base catalysis leads to the title compounds.
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(Taylor & Francis Group, 1987-04-01)The 15N, 31P and 31C NMR spectra of several series of phospha-λ5-azenes are reported. For the N-arylsulfonyl-P,P,P-triphenylphospha-δ5-azene series (R-C6H4N-SO2-PPh3), the 31P chemical shifts, various 13C chemical shifts ...
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(Taylor & Francis Group, 1979-03-01)p-Hydroxyphenyl α-halo sulfones are unusual in several respects. For example, p-hydroxyphenyl α-chloroisopropyl sulfone has no α′-H, however, when heated with one equivalent of base it undergoes a 1,7-elimination reaction ...
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(Taylor & Francis Group, 1978-03-01)Vor kurzem berichteten wir1 über die Addition von Halogenen (Cl2, Br2) und Interhalogenen (ClBr, C1J, BrJ) an Vinylphosphonsäurediisopropylester. Wir erhielten die 1,2-Dihaloäthan- und hieraus durch Dehydrohalogenierung ...
Отображаемые элементы 1-20 из 2241