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Synthesis, structure and catalytic behavior of yttrium complexes bearing a diaminobis(phenolate) ligand

  • Articles/Organic Chemistry
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Chinese Science Bulletin

Abstract

Yttrium complexes stabilized by a diaminobis(phenolate) ligand were synthesized and their catalytic behavior was explored. Reaction of YCl3 with 1 equiv of LNa2 [L= Me2NCH2CH2N{CH2-(2-O-C6H2-tBu2-3, 5)}2] gave the yttrium chloride LYCl(THF) (1) in 92% yield. Complex 1 can be used as starting material to prepare the yttrium amido derivative. Complex 1 reacted with 1 equiv of LiNPh2 in THF to afford the expected yttrium amido complex LYNPh2 (2) in high yield. Both of complexes 1 and 2 have been well detected by elemental analysis, NMR spectra and single-crystal X-ray analysis. It was found that complex 2 can efficiently initiate the ring-opening polymerization of L-lactide and ɛ-caprolactone, and a controlled manner is observed in the former case.

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Authors and Affiliations

  1. Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China

    FengKui Song, ChunHui Yan, HongMei Sun, YingMing Yao, Qi Shen & Yong Zhang

Authors
  1. FengKui Song
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  2. ChunHui Yan
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  3. HongMei Sun
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  4. YingMing Yao
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  5. Qi Shen
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  6. Yong Zhang
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Corresponding authors

Correspondence to HongMei Sun or YingMing Yao.

Additional information

Supported by the National Natural Science Foundation of China (Grant No. 20771078), Natural Science Foundation of Jiangsu Province (Grant No. BK2007505), and Major Basic Research Project of Natural Science Foundation of Jiangsu Higher Education Institutions (Grant No. 07KJA15014).

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Song, F., Yan, C., Sun, H. et al. Synthesis, structure and catalytic behavior of yttrium complexes bearing a diaminobis(phenolate) ligand. Chin. Sci. Bull. 54, 3231–3236 (2009). https://doi.org/10.1007/s11434-009-0434-6

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  • DOI: https://doi.org/10.1007/s11434-009-0434-6

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