| Abstract |
Reaction of a new hydrazone of beta-diketone, 5-(2-(4,4-dimethy1-2,6-dioxocydohexylidene)hydrazinypisophthalic acid (H3L), with zinc(II) nitrate hexahydrate in a mixture of DMF and water (1:1) under hydrothermal conditions affords the 1D coordination polymer [Zn(mu(3)-HL)(H2O)(2)](n)center dot nH(2)O (1), where one of the carboxylic groups links two Zn(II) centers in a bridging bidentate (syn-syn-type) mode and the remaining one ligates a third metal cation in a monodentate fashion. It was characterized by IR and NMR spectroscopies, ESI-MS, elemental and single-crystal Xray crystal structural analyses. 1 acts as an efficient pre-catalyst for the Henry reaction at 40 degrees C in aqueous medium, providing beta-nitroalcohols with good yields (67-86\%) and diastereoselectivities. (C) 2016 Elsevier B.V. All rights reserved. |
