Alkyl levulinates as 'green chemistry' precursors: butane-1,4-diyl bis(4-oxopentanoate) and hexane-1,6-diyl bis(4-oxopentanoate)

作者：Gainsford Graeme J^*; Hinkley Simon

来源：Acta Crystallographica Section C-Crystal Structure Communications, 2013, 69(6): 654-+.

DOI：10.1107/S0108270113011980

Levulinic acid derivatives are potential 'green chemistry' renewably sourced molecules with utility in industrial coatings applications. Suitable single crystals of the centrosymmetric title compounds, C14H22O6 and C16H26O6, respectively, were obtained with difficulty. The data for the latter hexane-1,6-diyl compound were extracted from the major fragment of a three-component twinned crystal. Both compounds crystallize in similar-sized unit cells with identical symmetry, utilizing the same weak nonconventional attractive C-H center dot center dot center dot O(ketone) hydrogen bonds via C(4) and C(5) motifs, which expand to R-2(2)(30) ring and C-2(2)(14) chain motifs. Their different packing orientations in similar-sized unit cells suggest that crystal growth involving packing mixes could lead to intergrowths or twins.

• 出版日期2013-6