Christofi, AM and Garratt, PJ and Hogarth, G and Steed, JW (2000) Synthesis and structures of chromium tricarbonyl complexes of benzylic halides and benzylic alcohols. J CHEM SOC DALTON (13) 2137 - 2144. 10.1039/b002142n.
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Abstract
Chromium tricarbonyl complexes of mono-, bis- and tris-(hydroxymethyl) substituted benzene have been prepared via direct thermolysis of the alcohol and chromium hexacarbonyl in dibutyl ether-THF. Conversion into the corresponding benzyl halide complexes has been carried out using either PBr3, HBr (aq), HBr in glacial acetic acid or BX3 (X=Cl, Br or I). A comparative study showed that PBr3 and BBr3 give similar yields and purity and are superior to HBr. Crystallographic studies have been carried out on three benzyl alcohol complexes [Cr{eta(6)-C6H4(CH2OH)(2)-1,4}(CO)(3)], [Cr{eta(6)-C6Me4(CH2OH)(2)-1,4}(CO)(3)] and [Cr{eta(6)-C6H3(CH2OH)(3)-1,3,5}(CO)(3)] and on two benzyl bromide complexes [Cr(eta(6)-C6H5CH2Br)(CO)(3)] and [Cr{eta(6)-C6H4(CH2Br)(2)-1,4}(CO)(3)].
| Type: | Article |
|---|---|
| Title: | Synthesis and structures of chromium tricarbonyl complexes of benzylic halides and benzylic alcohols |
| DOI: | 10.1039/b002142n |
| Keywords: | X-RAY, SUBSTITUENT |
| UCL classification: | UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Chemistry |
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