Detail of "5518-62-7"

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Synthesis and catalytic chemistry of two new water-soluble chelating phosphines

Synthesis and catalytic chemistry of two new water-soluble chelating phosphines. Comparison of ionic and nonionic functionalities. Baxley, Gregory T.; Weakley, T. J. R.Chemicals with cas numbers 63995-70-0 and 5518-62-7 also play role.; Miller, Warren K.; Lyon, David K.; Tyler, David R. (Department of Chemistry, University of Oregon, Eugene, Oregon 97403-1253, USA). Journal of Molecular Catalysis A: Chemical, 116(1-2), 191-198 (English) 1997 Elsevier. CODEN: JMCCF2. ISSN: 1381-1169. DOCUMENT TYPE: Journal CA Section: 29 (Organometallic and Organometalloidal Compounds) Section cross-reference(s): 23, 75, 78 Two new water-sol. chelating alkyl phosphines are described. The compds. are prepd. by radical addn. of allylic substrates to 1,2-bis(phosphino)ethane in methanol. Complexes with the stoichiometry of 1.5:1 diphosphine:rhodium(I) are effective in the hydrogenation of the olefins 1-hexene and crotonaldehyde. Catalyst solns. prepd. with the ligand DSPrPE [(NaO3SCH2CH2CH2)2PCH2CH2P(CH2CH2CH2SO3Na)2] were 3 times more active than those prepd. with TPPTS (triphenylphosphine tri-m-sulfonate) under identical conditions. Several rhodium complexes of the two ligands are described, and the crystal structure of Rh{1,2-bis[bis(3-hydroxypropyl)phosphino]ethane}2Cl was detd. .

Synthesis of functionalized 1,3-dienes and styrenes by catalytic carbopalladation of allenes

Synthesis of functionalized 1,3-dienes and styrenes by catalytic carbopalladation of allenes. Ahmar, Mohammed; Cazes, Bernard; Gore, Jacques (ESCIL, Univ. Claude Bernard Lyon I, Villeurbanne 69622, Fr.Chemical with cas number 5518-62-7 also plays role.).Several reagents such as 5518-62-7 is used here. Tetrahedron Lett., 25(40), 4505-8 (French) 1984. CODEN: TELEAY. ISSN: 0040-4039. DOCUMENT TYPE: Journal CA Section: 21 (General Organic Chemistry) The Pd catalyzed reaction of aryl and vinyl halides with allenes RCH:C:CH2 (R = H or heptyl) in the presence of sodium Et malonate I leads with good yields, and in certain cases with high stereoselectivity, to styrenes and 1,3-butadienes derivs. Thus, (E)-(EtO2C)2CHCH2C(CMe:CH2):CH(CH2)6Me was formed exclusively in 85% yield from the reaction of 1,2-decadiene, 1-bromopropene, and I. ..