Showing papers in "Journal of The Chemical Society, Chemical Communications in 1980"
TL;DR: The photodecomposition of water vapour proceeds steadily for more than 100 h on NiO-SrTiO3 powder and stops immediately when the water vapor is removed.
Abstract: The photodecomposition of water vapour proceeds steadily for more than 100 h on NiO–SrTiO3 powder and stops immediately when the water vapour is removed.
343 citations
TL;DR: Xe-Lamp irradiation of TiO2 powders mixed with a Pt, Pd, RuO2, or rhodium complex leads to the efficient production of hydrogen from liquid methanol and water at room temperature as mentioned in this paper.
Abstract: Xe-Lamp irradiation of TiO2 powders mixed with a Pt, Pd, RuO2, or rhodium complex, leads to the efficient production of hydrogen from liquid methanol and water at room temperature.
340 citations
TL;DR: In this article, a solid superacid catalyst with an acid strength of H0⩽−16·04 was obtained by exposing Zr(OH)4, prepared by the hydrolyses of ZrOCl2 and Zr O(NO3)2, to 1 N H2SO4 and then calcining in air at 575-650 °C.
Abstract: A solid superacid catalyst with an acid strength of H0⩽–16·04, which was active for reactions of propane and butane, was obtained by exposing Zr(OH)4, prepared by the hydrolyses of ZrOCl2 and ZrO(NO3)2, to 1 N H2SO4 and then calcining in air at 575–650 °C.
272 citations
TL;DR: In this article, a polypyrrrole polymer was shown to be repeatedly driven between the conducting and insulating states with E°′ near −220 mV vs. the sodium chloride calomel electrode.
Abstract: Thin films of the ‘metallic’ polymer, polypyrrrole, when adhered to a platinum electrode surface, can be repeatedly driven between the conducting and insulating state with E°′ near –220 mV vs. the sodium chloride calomel electrode.
202 citations
TL;DR: In this paper, generalisations of predictive utility are presented concerning the influence of steric and stereoelectronic effects on radical reactions, and some generalisations for predictive utility of radical reactions are discussed.
Abstract: Some generalisations of predictive utility are presented concerning the influence of steric and stereoelectronic effects on radical reactions.
148 citations
TL;DR: The fossil biological marker botryococcane has been discovered in high concentration in a crude oil as mentioned in this paper, and it has been found to be useful in the extraction of crude oil.
Abstract: The fossil biological marker botryococcane has been discovered in high concentration in a crude oil.
129 citations
TL;DR: In this article, the synthesis and cation binding properties of a series of macrocyclic polyethers which possess ligating arms that enhance cation bounding is presented. But they do not consider the properties of the polyether itself.
Abstract: The synthesis and cation binding properties of a series of macrocyclic polyethers which possess ligating arms that enhance cation binding is presented.
106 citations
TL;DR: The major component of the sex pheromone of the olive fly has been shown to be 1,7-dioxaspiro[5.5] undecane and its structure has been confirmed by unambiguous synthesis; field studies have confirmed its biological activity.
Abstract: The major component of the sex pheromone of the olive fly has been shown to be 1,7-dioxaspiro[5.5] undecane (1) and its structure has been confirmed by unambiguous synthesis; field studies have confirmed its biological activity.
102 citations
TL;DR: The structure of marcfortine A, a novel alkaloid isolated from Penicillium roqueforti, has been established by X-ray analysis.
Abstract: The structure of marcfortine A, a novel alkaloid isolated from Penicillium roqueforti, has been established by X-ray analysis; two minor alkaloids, marcfortine B and C, as well as the previously known roquefortine have also been isolated.
96 citations
TL;DR: In this paper, the AsF5 oxidation of poly-p-phenylene sulphide was used to produce the first melt-and solution-processible polymeric precursor to a conducting polymer.
Abstract: Electrically conducting p-type films, wires, and powders (ca. 1 Ω–1 cm–1) have been prepared by the AsF5 oxidation of poly-p-phenylene sulphide, the first melt- and solution-processible polymeric precursor to a conducting polymer.
89 citations
TL;DR: In this paper, it was shown that a racemic endiandric acid is formed from a phenyl polyene acid (2, n= 0) in three successive electrocyclic reactions: this was supported by the additional isolation from E. introrsa of the related racemic acids (7, n = 1) and (8).
Abstract: It is postulated that racemic endiandric acid is formed from a phenyl polyene acid (2; n= 0) in three successive electrocyclic reactions: this is supported by the additional isolation from E. introrsa of the related racemic acids (7; n= 1) and (8).
TL;DR: The one-step carboxylation of aromatic compounds such as benzene, toluene, anisole, chlorobenzene, furan, and thiophen has been carried out using carbon monoxide and palladium acetate; the reaction does not require oxygen and is electrophilic.
Abstract: The one-step carboxylation of aromatic compounds such as benzene, toluene, anisole, chlorobenzene, furan, and thiophen has been carried out using carbon monoxide and palladium acetate; the reaction does not require oxygen and is electrophilic.
TL;DR: The layered MnPS3 reacts with a wide range of "guest" cations G+, leading to new intercalation compounds of the type Mn1 -xPS3,G2x,(H2O)y as mentioned in this paper.
Abstract: The layered MnPS3 reacts with a wide range of ‘guest’ cations G+, leading to new intercalation compounds of the type Mn1 –xPS3,G2x,(H2O)y.
TL;DR: In this article, a sieves catalyse pyridinium chlorochromate and pyrinium dichromate oxidation and give rise to an efficient synthesis of ketonucleosides and ketosugars at room temperature.
Abstract: Molecular sieves catalyse pyridinium chlorochromate and pyridinium dichromate oxidation and so give rise to an efficient synthesis of ketonucleosides and ketosugars at room temperature.
TL;DR: An unstable rhodium alkyl has been characterised by n.m.r. spectroscopy at low temperatures under the conditions of homogeneous hydrogenation as discussed by the authors.
Abstract: An unstable rhodium alkyl has been characterised by n.m.r. spectroscopy at low temperatures under the conditions of homogeneous hydrogenation.
TL;DR: The stereoselectivity of 1,5-Ring closure of 1- or 3-substituted hex-5-enyl radicals was demonstrated in the formation of the norbornane system from acyclic precursors.
Abstract: 1,5-Ring closure of 1- or 3-substituted hex-5-enyl radicals affords mainly cis-disubstituted cyclic products, whereas 2- or 4-substituted species give mainly trans-products; the significance of this stereoselectivity is demonstrated in the formation of the norbornane system from acyclic precursors.
TL;DR: The complexes MOCl (neopentyl)3(M = Mo, W) can be isolated from solutions which are active in olefin metathesis, and although inactive alone, these species can be converted into very active catalysts.
Abstract: The complexes MOCl (neopentyl)3(M = Mo, W) can be isolated from solutions which are active in olefin metathesis, and although inactive alone, these species can be converted into very active catalysts; the syntheses of MO(neopentyl)4(M = Mo, W) are also reported.
TL;DR: In this paper, a branched 1-deoxylactit-1-yl derivative of chitosan using sodium cyanoborohydride has been described.
Abstract: Attachment of lactose to the 2-amino functions of chitosan using sodium cyanoborohydride afforded a branched 1-deoxylactit-1-yl derivative which exhibited a range of interesting solution properties.
TL;DR: In this paper, the synthesis of highly conducting derivatives of poly(p-phenylene sulphide) without a continuous system of overlapping carbon π-orbitals was reported, and the first melt-processible polymer which can be doped to high conductivity.
Abstract: We report the synthesis of highly conducting derivatives of poly(p-phenylene sulphide), the first such organic polymer without a continuous system of overlapping carbon π-orbitals, as well as the first melt-processible polymer which can be doped to high conductivity.
TL;DR: In this article, a method for the determination of organolithium reagent using 2,5-dimethoxybenzyl alcohol as a self-indicating primary standard is described.
Abstract: A method for the determination of organolithium reagent is described using 2,5-dimethoxybenzyl alcohol as a self-indicating primary standard.
TL;DR: The N-benzyloxycarbonyl group can be smoothly cleaved under mild conditions, using thioanisole-trifluoroacetic acid as mentioned in this paper.
Abstract: The N-benzyloxycarbonyl group can be smoothly cleaved under mild conditions, using thioanisole–trifluoroacetic acid, which can deprotect O-benzyltyrosine without the formation of O-to-C rearrangement products; this deblocking method was successfully applied to the synthesis of Met-enkephalin
TL;DR: Extremely efficient decarbonylation of aromatic and aliphatic aldehydes has been accomplished catalytically under ambient conditions using solutions of bis(triphenylphosphine)(tetraphenylporphyrinato)-ruthenium(II) as discussed by the authors.
Abstract: Extremely efficient decarbonylation of aromatic and aliphatic aldehydes has been accomplished catalytically under ambient conditions using solutions of bis(triphenylphosphine)(tetraphenylporphyrinato)-ruthenium(II).
TL;DR: Carbon-13 n.m.r. spectra of glycine, alanine, and valine showed splitting of the peaks for carbons bonded to nitrogen, thus giving a useful aid to assignment as discussed by the authors.
Abstract: Carbon-13 n.m.r. spectra of glycine, alanine, and valine show splitting of the peaks for carbons bonded to nitrogen, thus giving a useful aid to assignment.
TL;DR: In this paper, it was shown that transition metal cluster compounds act as homogeneous catalyst precursors in alkyl exchange reactions of tertiary amines; treatment of mixtures of Et3N and Pr3N with either Ru3(CO)12, Os3N, or Ir4(CO), and water leads to very efficient alkylation exchange.
Abstract: We have found that several transition metal cluster compounds act as homogeneous catalyst precursors in alkyl exchange reactions of tertiary amines; treatment of mixtures of Et3N and Pr3N with either Ru3(CO)12, Os3(CO)12, or Ir4(CO)12 and water leads to very efficient alkyl exchange.
TL;DR: In this paper, the homogeneous catalytic hydrogenation of activated and simple aliphatic carboxylic acid esters to their corresponding primary alcohols has been accomplished under mild conditions [90 °C; 620 kPa (gauge) of hydrogen] using a novel anionic ruthenium hydride complex.
Abstract: The homogeneous catalytic hydrogenation of activated and simple aliphatic carboxylic acid esters to their corresponding primary alcohols has been accomplished under mild conditions [90 °C; 620 kPa (gauge) of hydrogen] using a novel anionic ruthenium hydride complex.
TL;DR: The effect of increasing cyclodextrin (CD) concentration on the fluorescence spectra of sodium α-naphthylacetate is negligible for α-CD, large only in the normal fluorescence band for β-CD and large for both the normal and the excimer fluorescence bands for γ-CD.
Abstract: The effect of increasing cyclodextrin (CD) concentration on the fluorescence spectra of sodium α-naphthylacetate is negligible for α-CD, large only in the normal fluorescence band for β-CD, and large for both the normal and the excimer fluorescence bands for γ-CD, showing the ability of γ-CD to form one host–two guests complexes.
TL;DR: In this article, the trans-cis photoisomerization of potassium p-(phenylazo)benzoate was used for the photoregulation of p-nitrophenyl acetate catalyzed by β-cyclodextrin.
Abstract: The hydrolysis of p-nitrophenyl acetate catalyzed by β-cyclodextrin can be photoregulated by means of trans–cis photoisomerization of potassium p-(phenylazo)benzoate.
TL;DR: The specific incorporation of 3-amino-5-hydroxybenzoic acid into actamycin by a Streptomycete culture establishes this amino acid as a key intermediate in ansamycin and maytansinoid biosynthesis.
Abstract: The specific incorporation of 3-amino-5-hydroxybenzoic acid (2) into actamycin (1) by a Streptomycete culture establishes this amino-acid as a key intermediate in ansamycin and maytansinoid biosynthesis.
TL;DR: In this article, a novel catalytic approach involving co-operation of a bio-and a chemo-catalyst has been applied in the simultaneous enzymatic interconversion and platinum metal-catalysed hydrogenation of D-fructose-D-glucose mixtures (water, pH 7-8, 60 °C, 20 atm hydrogen); this gives an enhanced yield of Dmannitol.
Abstract: A novel catalytic approach involving co-operation of a bio- and a chemo-catalyst has been applied in the simultaneous enzymatic interconversion and platinum metal-catalysed hydrogenation of D-fructose–D-glucose mixtures (water, pH 7–8, 60 °C, 20 atm hydrogen); this gives an enhanced yield of D-mannitol.
TL;DR: In this paper, the Fischer-Tropsch synthesis of low molecular weight olefins has been studied for decomposition under CO + H2. And the selectivity of Fischer-tropsch syntheses has been shown to be very high.
Abstract: Fe(CO)5, Fe3(CO)12, and [HFe3(CO)11]– supported on inorganic oxides such as Al2O3, La2O3, MgO, or SiO2, exhibit, after decomposition under CO + H2, a very high selectivity in Fischer–Tropsch syntheses for low molecular weight olefins.