Reaction Of Tetrakis Research Articles

Reactions of tetrakis(2-hydroxyethyl)ammonium hydroxide

Reactions of tetrakis(2-hydroxyethyl)ammonium hydroxide

Reaction of tetrakis(trifluoromethyl)allene with sodium derivatives of iron and rhenium carbonyls

Reaction of tetrakis(trifluoromethyl)allene with sodium derivatives of iron and rhenium carbonyls

Reaction of 1,2-benzocyclobutadienequinone with zerovalent platinum: preparation and structure of (1,1-bistriphenylphosphine)platinabenzocyclopentenedione

The reaction of tetrakis(triphenylphosphine)platinum with 1,2-benzocyclobutadienequinone (1) effects an unsymmetrical opening of, and insertion of Pt(PPh3)2 into, the four-membered ring of (1) to give two conformers of the title compound, whose crystal structures have been determined.

Preparation and reactions of tetrakis(methyl isocyanide) complexes of divalent nickel, palladium, and platinum

Preparation and reactions of tetrakis(methyl isocyanide) complexes of divalent nickel, palladium, and platinum

Effect of Fire-Retardant Treatment on the Structure of the Cotton Fiber

The production of textile materials with reduced flammability is a research goal necessitated by the desire to reduce accidental burnings, as well as the need to meet increasingly strong legislative regulations. Cotton is normally a flammable material. A suitable fire-retardant treatment must give the fabric resistance to flaming and afterglow without detracting from the desirable natural properties of the cotton fiber. Generally, phosphorus-containing materials are very effective fire retardants. In situ polymerization of phosphorus-containing polymers on the surface and within a fiber is a practical means of imparting some degree of fire-retardancy.Tris(hydroxymethyl)phosphonium hydroxide (THPOH) can be formed from the reaction of tetrakis(hydroxymethyl)phosphonium chloride with sodium hydroxide.

Stereochemically nonrigid six-coordinate molecules. II. Preparations and reactions of tetrakis(organophosphorus)metal dihydride complexes

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStereochemically nonrigid six-coordinate molecules. II. Preparations and reactions of tetrakis(organophosphorus)metal dihydride complexesD. H. Gerlach, W. G. Peet, and E. L. MuettertiesCite this: J. Am. Chem. Soc. 1972, 94, 13, 4545–4549Publication Date (Print):June 1, 1972Publication History Published online1 May 2002Published inissue 1 June 1972https://doi.org/10.1021/ja00768a022RIGHTS & PERMISSIONSArticle Views559Altmetric-Citations74LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (711 KB) Get e-Alerts Get e-Alerts

Reactions of tetrakis(trifluoromethyl)allene

Reactions of tetrakis(trifluoromethyl)allene

Novel cycloaddition reactions of isocyanides with diphenylacetylene using transition-metal complexes

Reaction of tetrakis(aryl isocyanide)nickel complexes (Ia–c) with diphenylacetylene gave the diiminocyclobutenes (IIIa–c); on pyrolysis, the acetylene complex (Va) gave (IIIa) as sole product, while with (Vd) the major product was iminocyclopentadiene (VId).

Reactions of tetrakis(dimethylamino)ethylene with weak acids

Tetrakis(dimethylamino)ethylene reacts in methanol at 25° to give carbon-carbon bond cleavage, substitution of methoxyl for dimethylamino and addition of methanol to the double bond. The principal products are dimethylamine, dimethoxydimethylaminomethane and 1,1,2-trimethoxy-1,2-bis(dimethylamino)ethane. Minor products are methoxydimethylamino-N,N-dimethylacetamide, trimethylamine and dimethyl ether. An oxidation-reduction side reaction forms a very small amount of the radical cation of tetrakis(dimethylamino)ethylene. In the presence of sodium methoxide no carbon-carbon bond cleavage occurs and no radical cation is formed. When methanol is dissolved in tetrakis(dimethylamino)ethylene (methanol 1M), the principal products are 1,1,2-trimethoxy-1,2-bis(dimethylamino)ethane and dimethylamine with small amounts of tris(dimethylamino)methoxyethylene and 1,2-bis(dimethyl amino)-1,2-dimethoxyethylene. Tetrakis(dimethylamino)ethylene and water give dimethylamine and dimethylformamide.

Direct preparation of amidines. Reaction of tetrakis(dimethylamino)titanium with N-H carboxamides

Direct preparation of amidines. Reaction of tetrakis(dimethylamino)titanium with N-H carboxamides

Organic Phosphorus Compounds 52. Preparation and properties of β‐hydroxyalkyl‐phosphonium salts and tertiary phosphine oxides

AbstractThe new, tris‐ (2‐ hydroxyalkyl) ‐ (hydroxymethyl) ‐ phosphonium salts: [(RCHOHCH2)3 PCH2OH]Cl (I, R = ClCH2; III, R = CH3) are formed in high yield by reaction of tetrakis‐(hydroxymethyl)‐phosphonium chloride (Tetrakis) with epoxides under basic conditions. Under the same conditions, styrene oxide yields only the disubstituted product, [(PhCHOHCH2)2 (CH2OH)2P]Cl. Optimal pH values for the reactions are 8 to 9; at lower pH the conversion is too slow; at a higher pH, oxidative decomposition of the salts occurs. Conversion of the salts to tertiary phosphine oxides (RCHOHCH2)3P  O (R  ClCH2; CH3) with loss of the hydroxymethyl group is best carried out with chlorine at pH 5 to 7. The yields are usually 60 to 90%.

Carbon–carbon bond cleavage via oxidative addition: reaction of tetrakis(triphenylphosphine)platinum(0) with 1,1,1-tricyanoethane

The reaction of [Pt(PPh3)4] with MeC(CN)3 in benzene yields the complex [Pt(PPh3)2(CN)(CMe(CN)2)], a rare example of an oxidative addition reaction involving carbon–carbon cleavage.

Reactions of low-valent metal complexes with fluorocarbons. Part X. Reactions of tetrakis(methyldiphenylphosphine)platinum

Tetrakis(methyldiphenylphosphine)platinum reacts with bromotrifluoroethylene to give (Ph2PMe)2Pt(C2F3Br)(I) and, unexpectedly, trans-(Ph2PMe)2Pt(Ph)Br (II). The fluoro-olefin complex (I) readily rearranges to the perfluorovinyl compound trans-(Ph2PMe)2Pt(CF:CF2)Br (III). The rearrangement is accelerated by silver salts, and treatment of (I) or (Ph3P)2Pt(C2F3Br) with silver acetate affords respectively trans-L2Pt(CF:CF2)OAc (L = Ph2PMe or Ph3P). Treatment of (I) with carbon monoxide leads to isomerisation with formation of (Ph2PMe)(PhPMeC6H4)Pt(CF:CF2)(H) Br (IV). Reaction between (Ph2PMe)4Pt and C3F7l gives trans-(Ph2PMe)Pt(C3F7)l and (Ph2PMe)2Pt(C6H5)2l2. The corresponding reaction with CF3l affords trans-(Ph2PMe)2Pt(CF3)l. The acid chloride n-C3F7COCl reacts with (Ph2PMe)4Pt to give trans-(Ph2PMe)2Pt(COC3F7)Cl.

Oil-Repellent Finish for Cotton Based on Fluorinated Amines

A new finish for cotton fabric which imparts high oil repellency with low water repellency is described. The finish is based on the reaction of tetrakis(hydroxymethyl)-phosphonium chloride and 1,1-dihydroperfluorooctylamine and is applied from aqueous emulsions with a gaseous ammonia cure. The emulsion is suitable for simultaneous application with a typical permanent-press agent to obtain wrinkle-recovery properties. In soiling tests, certain of the soiling properties of the finish showed an improvement over commercially used fluorocarbon treatments in the range of add-ons studied.

Chemistry of the metal carbonyls. Part LVI. Reactions of bis(pentafluorophenyl)phosphine and tetrakis(pentafluorophenyl)diphosphine with Group VI metal hexacarbonyls

Reactions between bis(pentafluorophenyl)phosphine and Group VI metal carbonyls have been investigated and the mono-, di- and tri-substituted complexes [(C6F5)2PH]M(CO)5(M = Cr, Mo, W), [(C6F5)2PH]2M(CO)4(M = Cr, Mo), and [(C6F5)2PH]3Mo(CO)3 characterised. Treatment of the monosubstituted chromium and molybdenum complexes with n-butyl-lithium affords (C6F5)2P(Li)M(CO)5(M = Cr, Mo). Reaction of tetrakis(pentafluorophenyl)diphosphine with Cr(CO)6 and Mo(CO)6 gave polymeric complexes [(C6F5)4P2M(CO)4]n(M = Cr, Mo), and small yields of the monosubstituted complexes [(C6F5)2PH]Mo(CO)5. The anions [M(CO)5]2–(M = Cr, Mo) react with (C6F5)2PCl to give the monosubstituted diphosphine complexes (C6F5)4P2M(CO)5. The chromium complex was also prepared from (C6F5)2P(Li)Cr(CO)5 and (C6F5)2PCl.

Reaction of tetrakis(dimethylamino)titanium with tetramethyloxamide

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTReaction of tetrakis(dimethylamino)titanium with tetramethyloxamideJames Dennis Wilson and Harold WeingartenCite this: J. Org. Chem. 1968, 33, 3, 1246–1247Publication Date (Print):March 1, 1968Publication History Published online1 May 2002Published inissue 1 March 1968https://doi.org/10.1021/jo01267a070RIGHTS & PERMISSIONSArticle Views54Altmetric-Citations3LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (292 KB) Get e-Alerts Get e-Alerts

Reactions of tetrakis(triphenylphosphine)palladium(0) with olefins bearing electron-withdrawing substituents

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THE AUTOXIDATION OF TETRAKIS‐(DIMETHYLAMINO)‐ETHYLENE

Abstract— The reaction of tetrakis‐(dimethylamino)‐ethylene (I) with oxygen in non‐hydroxylic solvents gives tetramethylurea (II), tetramethyloxamide (III), tetramethyl‐hydrazine (IV), and bis‐(dimethylamino)‐methane (V) in yields that are virtually independent of solvent and temperature, or whether chemiluminescence occurs. Autoxidation over water solutions, however, first gives octamethyloxamidinium peroxide (VI) which then hydrolyzes to give III and dimethylamine, and undergoes an alternative demethylation reaction to give tetramethyl 2‐(dimethylamino)‐2‐hydroxy‐2‐(methylamino)‐acetamidinium (VIII) and formate (IX) salts. Both courses of autoxidation are observed in solutions containing lithium chloride, in methanol or in water‐dioxane mixtures. A common intermediate is suggested.

The Reactions of Tetrakis(dimethylamino)ethylene with Polyhalogenated Compounds

The Reactions of Tetrakis(dimethylamino)ethylene with Polyhalogenated Compounds

Beiträge zur Chemie des bors XXVIII. Über die Einwirkung von Borhalogeniden auf Dibortetrakis(dimethylamid)

The exchange of (CH 3) 2N groups for halogen in the reaction of tetrakis(dimethylamino)diboron with the boron halides BCl 3, BBr 3, R 2BCl and RBBr 2 yields (dimethylamino)halodiborons B 2[N(CH 3) 2] 4− n X n ( n = 1, 2; XCl, Br). Diboron tetrahalides cannot be prepared by this reaction using excess of a boron halide.