Synthesis and structure of tribenzo-19-crown-6 lariat ethers |
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Authors: | Youngchan Jang Xialoan Kou N Kent Dalley Richard A Bartsch |
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Institution: | 1. Department of Chemistry and Biochemistry , Texas Tech University , Lubbock, TX, 79409, USA;2. Department of Chemistry , Brigham Young University , Provo, UT, 84602, USA |
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Abstract: | Abstract Multistep preparative routes to a series of three new, protonionizable lariat ethers, sym-(R)tribenzo-19-crown-6-oxyacetic acids with R = H, C3H7, and C8H17 have been developed. The crystal structure of the synthetic intermediate sym-(hydroxy)(propyl)-tribenzo-19-crown-6 has been determined. The compound crystallized in the monoclinic space group P21/c with a = 8.902(4) Å, b = 10.296(5) Å, c = 27.631(9) Å, β = 97.41° with a volume of 2511.4 Å3. The calculated density is 1.268 mg/mm3 with Z = 4. The final R values are R = 7.99% and Rw = 5.17% using 1558 observed reflections F>3.0 sgrave](F)]. |
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