Yttrium, tris

Yttrium tri-iTo-propoxide (powder) (1.07 g, 4.0 mmol Kojundo Chemical Laboratory Co., Ltd)... 

To a 50 mL, flame dried round-bottomed flask equipped with a magnetic stirrer bar and a 3-way tap with argon balloon containing yttrium tri-Ao-propoxide (1.07 g, 4.0 mmol) at 0°C was slowly added freshly distilled tetrahydrofuran (20 mL) over 30 min. After stirring for 30 min at 0 °C, the mixture was warmed to room temperature. The stirring was continued for 1 h at room temperature to afford 0.2 M yttrium tri-wo-propoxide solution in tetrahydrofuran. 

Note (a) The quality of the yttrium tri-iso-propoxide solution is important to obtain good reactivity and selectivity. (Yttrium tri-iso-propoxide from Kojundo was used). In addition, yttrium tri-iso-propoxide should be charged into the flask under argon using a glove bag or in a glove box. 

McKittrick et al. prepared (Yi cEU c)203 hlms employing just such a strategy (McKittrick et al., 2000). The objective is to produce a compound with photoluminescent and cathodoluminscent properhes suitable for hat-panel displays. Yttrium tris(2,2,6,6-tetramethyl-3,5-heptanedionate) can be decomposed to produce Y2O3 ... 

Miyanaga [2] prepared moderate molecular weight polyglycidol ethers, (II), by polymerizing the corresponding glycidol ether with samarium triisopropoxide, samarium tris(tetramethyl heptanedionate), and yttrium tris(tetramethyl hep-tanedionate) with methyl aluminoxane. 

Tredget, C.S., Lawrence, S.C., Ward, B.D. et al. (2005) A family of scandium and yttrium tris((trimethylsilyl)methyl) complexes with neutral N3 donor Ugands. Organometallics, 24, 3136. 

YOiC H , Yttrium, tris(2.6-di-tert-butyl-phenoxo)-. 27 167... 

A more readily available Fe-complex for asymmetric Diels-Alder reaction is from chiral hydrobenzoin.Dienophiles derived from f7/ ,61 )-l-pivaloyloxyspiro[4.4]nonan-6-ol 5 give chiral adducts on reaction with dienes. A representative of axially chiral dienophiles is 65 which gives Diels-Alder reactions with high endo- and diastereoselectivity. An access to dihydropyranyl ethers by the hetero-Diels-Alder reaction, C2-syiiunetric Cu(II) complexes such as and yttrium tri[(7 )-l,l -binaphth-2,2 -diyl]phosphonate are... 

O3YC45HM, Yttrium, tris(2,6-di-terf-butyl-4-methylphenoxo)-, 27 167 0,YbC4sH , Ytterbium, tris(2,6-di-tert-bu-tyl-4-methyiphenoxo)-, 27 167 04A FeC22H,s, Iron, tetracarbonyl(tri-phenylarsine)-, 26 61 04BF4MoC H , Molybdenum(l +), (ace-tone)tricarbonyl(T) -cyclopentadienyl)-, tetrafluoroborate(l -), 26 105 O4BF4WC11H11, Tungsten(l +), (ace-... 

YO3C43HS3, Yttriuni, triis(2,6-di-tert-butylphcnoxo)-, 27 167 YO3C45H69, Yttrium, tris(2,6-di-tert-butyl-4-methylphenoxoK 27 167 YjCljSigCggHgg, Yttrium, tetrakis[ii -l,3-bis(trimethylsilyl)cyclopentadienyl]di- -chloro-di-, 27 171 YbC,gH,o, Ytterbium(IIX bis(phenylethynyl)-, 27 143 YbCl2Li02Si4C3oH5g, Ytterbium, bis[ -... 

Yttrium tris-amido monoadduct NHC complexes have been studied in detail. Treatment of Y[N(SiHMe2)2]s with 1 or 2 equivalents of the free carbene IMe... 

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