767-60-2, 3-Methyl-1H-indene is a catalyst-ligand compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated
(6/5-tert-Butyl-2-methyl-1H-inden-4/7-yl)(cyclopenta-2,4-dien-1-yl)dimethylsilane To a solution of 971 mg (13.5 mmol) of CpLi in 100 ml of THF a solution of 3.77 g (13.5 mmol) of chloro(dimethyl)(2-methyl-5-tert-buthyl-1H-inden-7-yl)silane in 10 ml of THF was added dropwise by vigorous stirring for 5 min at -80 C. This mixture was additionally stirred for 1 h at room temperature, and 1 ml of water was added. The mixture was evaporated to dryness, and 100 ml of water was added to the residue. The crude product was extracted with 3*50 ml of dichloromethane. The combined organic extract was dried over Na2SO4 and evaporated to dryness. The product was isolated from the residue by flash chromatography using a short column with Silica Gel 60 (40-63 um, d 60 mm, l 50 mm; eluent: hexanes). Yield 3.85 g (86%) of pure cyclopenta-2,4-dien-1-yl(dimethyl)(2-methyl-5-tert-buthyl-1H-inden-7-yl)silane. Anal. calc. for C21H28Si: C, 81.75; H, 9.15. Found: C, 81.52; H, 9.09. 1H NMR (CDCl3): delta 7.35-7.39 (m, 2H, 4,6-H in indenyl), 6.65 (br.s, 2H, 3,4-H in Cp), 6.50-6.56 (m, 3H, 3-H in indenyl and 2,5-H in Cp), 3.78 (br.s, 1H, 1-H in Cp), 3.36 (s, 2H, 1,1′-H in indenyl), 2.19 (s, 3H, 2-Me in indenyl), 1.39 (s, 9H, C(CH3)3 in indenyl), 0.25 (s, 6H, SiMe2). 13C{1H} NMR (CDCl3): delta 148.6, 145.9, 145.7, 145.4, 133.5 (br.), 131.7, 130.6 (br.), 127.3, 126.2, 118.3, 51.1, 43.7, 31.6, 29.7, 16.8, -3.5.Complex 22-Zr (0413) (0414) To a solution of 3.73 g (10.0 mmol) of (6/5-tert-butyl-2-methyl-1H-inden-4/7-yl)(dimethyl)(3-methyl-1H-inden-1-yl)silane in 200 ml of ether 8.0 ml of 2.5 M (20 mmol) of n-BuLi in hexanes was added by vigorous stirring for 5 min at room temperature. This mixture was stirred for 12 h, then cooled to -30 C., and 3.77 g (10 mmol) of ZrCl4(THF)2. The resulting mixture was stirred for 24 h at room temperature and then evaporated to dryness. A mixture of the residue obtained and 200 ml of toluene was stirred for 6 h at 80 C. and then filtered through glass frit (G4). The precipitate was additionally washed by 3¡Á50 ml of hot toluene. The combined extract was evaporated to dryness, and the residue was re-crystallized from 30 ml of toluene. Crystals precipitated at -30 C. were collected, washed by 3¡Á4 ml of cold toluene, 2¡Á7 ml of hexanes, and dried in vacuum. Yield 2.61 g (49%) of one pure isomer. (0415) Anal. calc. for C26H30Cl2SiZr: C, 58.62; H, 5.68. Found: C, 58.89; H, 5.79. (0416) 1H NMR (CD2Cl2): delta 7.35-7.40 (m, 3H, 5,7-H in 2-methylindenyl and 4-H in 3-methylindenyl), 7.10 (m, 1H, 5-H in 3-methylinden-1-yl), 6.88 (m, 1H, 6-H in 3-methylinden-1-yl), 6.75 (d, J=7.6 Hz, 7-H in 3-methylindenyl) 6.48 (m, 1H, 3-H in 2-methylindenyl), 6.45 (m, 1H, 1-H in 2-methylindenyl), 6.27 (m, 1H, 2-H in 3-methylindenyl), 2.49 (s, 3H, Me in 3-methylinden-1-yl), 2.24 (s, 3H, Me in 2-methylinden), 1.34 (s, 9H, 5-C(CH3)3 in 2-methylindenyl), 1.02 (s, 3H, SiMeMe?), 0.89 (s, 3H, SiMeMe?). (0417) 13C{1H} NMR (CD2Cl2): delta 149.9, 139.7, 133.8, 132.1, 131.3, 129.3, 127.0, 126.6, 126.4, 126.1, 125.8, 123.5, 121.0, 119.3, 117.4, 108.7, 99.2, 98.9, 34.8, 30.6, 16.8, 13.7, -1.9, -4.0.
767-60-2, As the paragraph descriping shows that 767-60-2 is playing an increasingly important role.
Reference£º
Patent; Borealis Technology Oy; Voskoboynik, Alexander Zelmanovich; Asachenko, Andrei Fyodorovich; Konanovich, Dmitry; Nikulin, Mikhail V.; Tzarev, Alexey; Maaranen, Janne; Vanne, Tiina; Kauhanen, Jyrki; Mansner, Erik; Kokko, Esa; Saarinen, Laura; US8569532; (2013); B2;,
Metal catalyst and ligand design
Ligand Template Strategies for Catalyst Encapsulation – NCBI