Javier González-platas

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Thirteen new sesquiterpenes, pulicanadiene A (1), B (2), and C (3), pulicanone (4), pulicanol (5), pulicanarals A (6), B (7), and C (8), pulicanadienals A (9) and B (10), pulicanadienol (11), and pulioplopanones A (12) and B (13), and seven known compounds, stigmasterol, ergosterol peroxide, calenduladiol, 7,4'-di-O-methyldihydrokaempferol,(More)
[see reaction]. The reaction of activated alkynes with carbonyl compounds in the presence of a catalytic amount of a nucleophile leads to enol-protected functionalized propargyl alcohols and 1,3-dioxolane compounds by way of a mild carbon-carbon bond formation reaction.
Among the most appreciated chemical complexity-generating reactions, domino processes [1] maintain a privileged status. They perform molecular complexity in a fast and efficient manner, accumulating important “green chemistry” values such as atom, time and labour economies, resource management and minimal chemical waste generation. An appealing subclass of(More)
Four new compounds, a sesquiterpene, eleganodiol (1), and three sesquiterpene lactones, eleganolactone A (2), eleganolactone B (3), and elegain (4), were isolated from Gonospermum elegans along with 16 known compounds. The structures of 1, 2, and 4 were determined on the basis of MS and NMR studies of their acetate derivatives (1a, 2a, 4a). The structure of(More)
Two new fluoromanganates(III) of 1,2-bis(4-pyridyl)ethane (bpa) and trans-1,2-bis(4-pyridyl)ethylene (bpe), LH(2)[MnF(4)(H(2)O)(2)](2) (L = bpa or bpe), have been prepared and their structure have been solved by single-crystal X-ray diffraction. The [MnF(4)(H(2)O)(2)](-) anion displays an octahedral geometry with a strong Jahn-Teller tetragonal distortion(More)
The reaction of Pd(dba)(2) (dba = dibenzylideneacetone) with [W(3)Se(4)(H(2)O)(9)](4+) in 2 M HCl gives the cuboidal cluster [W(3)(PdCl)Se(4)(H(2)O)(9)](3+), which undergoes edge-to-edge condensation and crystallizes from Hpts solutions as edge-linked double-cubane cluster [{W(3)PdSe(4)(H(2)O)(9)}(2)](pts)(8) x 18 H(2)O (pts(-) = p-toluenesulfonate). The(More)
The Sc(2)(WO(4))(3)-type phase (Pbcn) of Y(2)(MoO(4))(3), Er(2)(MoO(4))(3) and Lu(2)(MoO(4))(3) has been prepared by the conventional solid-state synthesis with preheated oxides and the negative thermal expansion (NTE) has been investigated along with an exhaustive structural study, after water loss. Their crystal structures have been refined using the(More)
New triangular Mo(IV) and W(IV) incomplete cuboidal cluster complexes containing three η(2)-diethyldithiophosphates (dtp, one per metal centre) and a η(2)(μ)-AcO or η(2)(μ)-dtp ligand bridging two of these centres have been prepared as mono-substituted derivatives and characterized by the usual techniques plus single crystal X-ray diffraction (XRD) analysis(More)
The correlation between the optical properties of the Eu(3+) ions and their local structures in fluorozirconate glasses and glass-ceramics have been analyzed by means of steady-state and time-resolved site-selective laser spectroscopies. Changes in the crystal-field interaction, ranging from weak to medium strength values, are observed monitoring the(More)
The novel Re(II) complex NBu4[Re(NO)Br4(Hnic)] (1) and the heterodinuclear compounds [Re(NO)Br4(μ-nic)Ni(dmphen)2]·½CH3CN (2), [Re(NO)Br4(μ-nic)Co(dmphen)2]·½MeOH (3), [Re(NO)Br4(μ-nic)Mn(dmphen)(H2O)2]·dmphen (4), [Re(NO)Br4(μ-nic)Cu(bipy)2] (5) [Re(NO)Br4(μ-nic)Cu(dmphen)2] (5') (NBu4(+) = tetra-n-butylammonium cation, Hnic = 3-pyridinecarboxylic acid,(More)