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Unexpected carbon-oxygen bond cleavage of THF promoted by guanidinate titanium complex/lithium diisopropylamide: Synthesis and crystal structure

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Chinese Science Bulletin

Abstract

An unexpected carbon-oxygen bond cleavage of THF (THF = tetrahydrofuran) promoted by guanidinate titanium complex was described. Guanidinate lithium [Pr2 iNC(NCy)2]Li (Cy = cyclohexyl) formed in situ reacted with TiCl4(THF)2 in a 2:1 molar ratio to produce the guanidinate titanium chloride [Pr2 iNC(NCy)2]2TiCl2 (1) in good yield. The reaction of [Pr2 iNC(NCy)2]2TiCl2 with lithium diisopropylamide in THF afforded an unexpected [Pr2 iNC(NCy)2]2Ti(OBun)2 (2), which was formed by the cleavage of carbon-oxygen bond of THE Complexes 1 and 2 were fully characterized by elemental analysis, NMR and IR spectroscopies, and X-ray crystal structure determination for complex 2.

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Authors and Affiliations

  1. Key Laboratory of Organic Synthesis, Department of Chemistry and Chemical Engineering, Suzhou University, 215006, Suzhou, China

    Yong Zhang, Mei Wang, Yingming Yao & Qi Shen

  2. Department of Public Course, Bengbu Medical College, 233003, Bengbu, China

    Mei Wang

Authors
  1. Yong Zhang
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  2. Mei Wang
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  3. Yingming Yao
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  4. Qi Shen
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Correspondence to Yingming Yao.

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Zhang, Y., Wang, M., Yao, Y. et al. Unexpected carbon-oxygen bond cleavage of THF promoted by guanidinate titanium complex/lithium diisopropylamide: Synthesis and crystal structure. Chin.Sci.Bull. 50, 2817–2820 (2005). https://doi.org/10.1360/982005-487

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  • DOI: https://doi.org/10.1360/982005-487

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