0000000001309014
AUTHOR
Fernando López-ortiz
Influence of conformational factors on acid-catalyzed cyclizations of germacranolides: Molecular structure of the cyclization products of gallicin and 8α-hydroxygallicin (shonachalin a)
Acid-catalyzed cyclization of the natural germacranolide gallicin (8) yielded, among other products, the 1,4-epoxyeudes-manolide 9, which has a trans-fused decaline system. Under the same conditions the closely related germacranolide shonachalin A (8α-hydroxygallicin) (3) cyclized to the eudesmanolide 4 with a cis fused decaline system. The structures of these cyclization products were secured by means of chemical correlations and X-ray diffraction analyses.
Synthesis, crystal structures and magnetic properties of a P-stereogenic ortho-(4-amino-tempo)phosphinic amide radical and its CuII complex
The synthesis of phosphinic amides containing one 4-amino-TEMPO substituent at the ortho position has been achieved through copper(I) catalyzed cross-coupling reactions of ortho-iodophosphinic amides with 4-amino-TEMPO. The method has been extended to the preparation of the first example of a P-stereogenic ortho-(4-amino-tempo)phosphinic amide radical 10. The reaction of 10 with Cu(hfac)2 afforded the P-stereogenic CuII complex 19. The crystal structure of both chiral compounds is reported. The molecular structure of 10 consists of a supramolecular zig-zag chain formed by intermolecular hydrogen bonds between the NH group of the phosphinic amide moiety and the nitroxide oxygen atom. In comp…
Synthesis, structural characterization and electrochemical and magnetic studies of M(hfac)2 (M = CuII, CoII) and Nd(hfac)3 complexes of 4-amino-TEMPO
Three mononuclear complexes [M(hfac)x(ATEMPO)y], where M = Cu (11) and Co (12), x = y = 2; M = Nd (13), x = 4, y = 1, and two polynuclear complexes [{Cu(hfac)2(ATEMPO)}n], where n = 2 (14) and 4 (15), were obtained by the reaction of M(hfac)x (M = CuII, CoII, NdIII; x = 2, 3) with 4-amino-TEMPO (4-amino-2,2,6,6-tetramethylpiperidin-N-oxyl) in good yields and their structural, electrochemical and magnetic properties were examined. In all cases, the radical is coordinated to the metal through the amino group, except 15, and the metal ions have an octahedral geometry, except 13. Different coordination architectures of the copper complexes were obtained as a function of the stoichiometry and so…
CCDC 1978264: Experimental Crystal Structure Determination
Related Article: Yolanda Navarro, Guilherme P. Guedes, Joan Cano, Pilar Ocón, María José Iglesias, Francisco Lloret, Fernando López-Ortiz|2020|Dalton Trans.|49|6280|doi:10.1039/D0DT00541J
CCDC 2011812: Experimental Crystal Structure Determination
Related Article: Yolanda Navarro, Guilherme P. Guedes, Miguel A. del Águila-Sánchez, María José Iglesias, Francisco Lloret, Fernando López-Ortiz|2021|Dalton Trans.|50|2585|doi:10.1039/D0DT04298F
CCDC 2011813: Experimental Crystal Structure Determination
Related Article: Yolanda Navarro, Guilherme P. Guedes, Miguel A. del Águila-Sánchez, María José Iglesias, Francisco Lloret, Fernando López-Ortiz|2021|Dalton Trans.|50|2585|doi:10.1039/D0DT04298F
CCDC 1978261: Experimental Crystal Structure Determination
Related Article: Yolanda Navarro, Guilherme P. Guedes, Joan Cano, Pilar Ocón, María José Iglesias, Francisco Lloret, Fernando López-Ortiz|2020|Dalton Trans.|49|6280|doi:10.1039/D0DT00541J
CCDC 1978263: Experimental Crystal Structure Determination
Related Article: Yolanda Navarro, Guilherme P. Guedes, Joan Cano, Pilar Ocón, María José Iglesias, Francisco Lloret, Fernando López-Ortiz|2020|Dalton Trans.|49|6280|doi:10.1039/D0DT00541J
CCDC 1978262: Experimental Crystal Structure Determination
Related Article: Yolanda Navarro, Guilherme P. Guedes, Joan Cano, Pilar Ocón, María José Iglesias, Francisco Lloret, Fernando López-Ortiz|2020|Dalton Trans.|49|6280|doi:10.1039/D0DT00541J
CCDC 1978260: Experimental Crystal Structure Determination
Related Article: Yolanda Navarro, Guilherme P. Guedes, Joan Cano, Pilar Ocón, María José Iglesias, Francisco Lloret, Fernando López-Ortiz|2020|Dalton Trans.|49|6280|doi:10.1039/D0DT00541J