Detail of "1719-58-0"

Reference

Alternative ligands

Alternative ligands. XXVII. Novel bidentate phosphine ligands with M'R2 acceptor centers (M' = Si, Ge; R = Me, Ph). Grobe, Joseph; Krummen, Anita (Anorg. Chem. Inst., Westfael. Wilhelms-Univ., Muenster D-4400, Germany). Z. Naturforsch., B: Chem. Sci., 47(1), 104-8 (German) 1992. CODEN: ZNBSEN. ISSN: 0932-0776. DOCUMENT TYPE: Journal CA Section: 29 (Organometallic and Organometalloidal Compounds) Dipod ligands R2M'(OCH2PMe2)x(CH2CH2PMe2)2-x (R = Me, Ph; M' = Si, Ge; x = 0-2) have been prepd. by reacting R2M'Cl2 and R2M'ClxVi2-x (x = 0, 1), resp. 23111-12-8 and 1719-58-0 which are cas registry numbers of chemicals are mentioned., with Me2PCH2OH in the presence of Me3N, in case of the resulting vinyl-M' derivs., R2M'(OCH2PMe2)xVi2-x (x = 0, 1) followed by the photochem. addn. of Me2PH to the vinyl groups. Anal. (C, H) and spectroscopic (NMR, MS) investigations prove the purity and identity of the new donor/acceptor ligands. .

A ROMP-derived, polymer-supported chiral Schrock catalyst for enantioselective ring-closing olefin metathesis

Several substances are used for example 719270-04-9 and 1719-58-0 which are their cas registry numbers. A ROMP-derived, polymer-supported chiral Schrock catalyst for enantioselective ring-closing olefin metathesis. Kroell, Roswitha M.; Schuler, Norbert; Lubbad, Said; Buchmeiser, Michael R. (Institut fuer Analytische Chemie und Radiochemie, Universitaet Innsbruck, Innsbruck A-6020, Austria). Chemical Communications (Cambridge, United Kingdom), (21), 2742-2743 (English) 2003 Royal Society of Chemistry. CODEN: CHCOFS. ISSN: 1359-7345. DOCUMENT TYPE: Journal CA Section: 28 (Heterocyclic Compounds (More Than One Hetero Atom)) Section cross-reference(s): 27, 35 A permanently polymer-immobilized version of Schrock's molybdenum catalyst was realized via polymn. of chiral 5,5'-bis(norborn-5-ene-2-ylmethyleneoxymethyl)-3,3'-di-tert-butyl-6,6'-di methylbiphen-2,2'-diol followed by reaction with the catalyst precursor Mo(N-2,6-i-Pr2C6H3)(CHCMe2Ph)(OSO2CF3)2(CH3OCH2CH2OCH3). Using this catalyst, 5-, 6- and 7-membered heterocycles were synthesized via ring-closing metathesis (RCM) from (pro-)chiral substrates in high yields and ee with short reaction times. The catalyst shows low loss of molybdenum during RCM, and was easily sepd. and recycled. .