Mostrando 1,001 - 1,020 Resultados de 2,233 Para Buscar 'Qiyamah~', tiempo de consulta: 2.59s Limitar resultados
  1. 1001
    por Tuccinardi, Joseph P., Wood, John L.
    Publicado 2022
    “…The latter is further advanced to a macrocyclic precursor via a Nozaki–Hiyama–Kishi cyclization and a one-pot furan oxidation/oxa-Michael cascade. …”
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  2. 1002
    “…This review presents the progress, the challenges and the prospects of palladium nanoparticle with focus on Heck, Suzuki, Hiyama and Sonogashira cross‐coupling reactions involving (hetero) aryl halides and the analogues.…”
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  3. 1003
    “…The silanes, which can be synthesized on multigram scale, undergo Hiyama–Denmark coupling to give (Z)-alkenyl polyene motifs found in bioactive natural products. …”
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  4. 1004
    “…Nishiura H, Kobayashi T, Miyama T, et al.Int J Infect Dis 2020;94:154-155. https://doi.org/10.1016/j.ijid.2020.03.020. …”
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  5. 1005
    “…These were coupled by a Horner–Wadsworth–Emmons reaction sequence and an esterification. A late stage Nozaki–Hiyama–Kishi reaction was then used to form the 22-membered macrolide. …”
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  6. 1006
    “…They were identified using various techniques such as Fourier-transform infrared spectroscopy, X-ray diffraction, field emission scanning electron microscopy, energy-dispersive X-ray spectroscopy, transmission electron microscopy, thermogravimetric analysis, vibrating sample magnetometry, X-ray photoelectron spectroscopy, and inductively coupled plasma atomic emission spectroscopy analysis and applied efficiently as a cobalt catalyst in the cyanation and fluoride-/palladium-free Hiyama reactions of different types of aryl halides employing K(4)[Fe(CN)(6)]·3H(2)O and triethoxyphenylsilane, respectively. …”
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  7. 1007
  8. 1008
    por Taneja, Davendra Kumar
    Publicado 2014
    “…It involves eight rungs or limbs of yoga, which include yama, niyama, asana, pranayama, pratyahara, dharana, dhyana, and samadhi. …”
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  9. 1009
    “…Here we report on the conversion of CO(2) with diaryldisilanes, which through cooperative redox activation generate carbon monoxide and a diaryldisiloxane that actively participate in a palladium-catalysed carbonylative Hiyama-Denmark coupling for the synthesis of an array of pharmaceutically relevant diarylketones. …”
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  10. 1010
    “…The reaction to link iodoalkene 9 and formylmacrolactone 4, using the Nozaki–Hiyama–Takai–Kishi coupling, gave an advanced synthetic intermediate with total stereocontrol. …”
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  11. 1011
    “…Here we reported the palladium-catalyzed Suzuki–Miyaura, Heck and Hiyama type cross-coupling via DNA-conjugated aryl diazonium intermediates for DNA-encoded chemical library (DEL) synthesis. …”
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  12. 1012
    “…More recently, nickel catalysis has been shown to participate in a wide variety of C–C bond forming reactions, most notably Negishi, Suzuki–Miyaura, Stille, Kumada, and Hiyama couplings(1,2). Despite the tremendous advances in C–C fragment couplings, the ability to forge C–O bonds in a general fashion via nickel catalysis has been largely unsuccessful. …”
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  13. 1013
    “…We investigated the recruitment of specific parasitoids using a specific blend of synthetic herbivory-induced plant volatiles (HIPVs) as a novel method of pest control in greenhouses. In the Miyama rural area in Kyoto, Japan, diamondback moth (DBM) (Plutella xylostella, Lepidoptera: Plutellidae) larvae are an important pest of cruciferous crops in greenhouses, and Cotesia vestalis (Hymenoptera: Braconidae), a larval parasitoid of DBM, is found in the surrounding areas. …”
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  14. 1014
    “…Initial efforts were based on masking the reactive maleic anhydride moiety as a 3,4‐substituted furan and on forming the nine‐membered carbocycle in an intramolecular Conia‐ene or Nozaki–Hiyama–Kishi (NHK) reaction. Those strategies suffered from low yields and were jeopardized by a late‐stage installation of the Z‐alkene, as well as the stereocenters along the eastern periphery. …”
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  15. 1015
    “…The proposed strategies include metathesis, Nozaki–Hiyama–Kishi (NHK) cyclization, Pd-mediated cyclization, radical cyclization, Pauson–Khand reaction, Lewis acid-promoted cyclization, rearrangement, cycloaddition and biocatalysis.…”
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  16. 1016
    “…The reaction displays different chemoselectivity than conventional cross-coupling reactions, such as the Suzuki–Miyaura, Stille, and Hiyama–Denmark reactions. Substrates bearing both an electrophilic and nucleophilic carbon result in selective coupling at the electrophilic carbon (R–X) and no reaction at the nucleophilic carbon (R–[M]) for organoboron (−Bpin), organotin (−SnMe(3)), and organosilicon (−SiMe(2)OH) containing organic halides (X–R–[M]). …”
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  17. 1017
    por Ke, Lei, Chen, Zhilong
    Publicado 2020
    “…Many diene building blocks have been developed based on Suzuki, Still and Hiyama couplings. Herein, the commercially available and environmentally friendly compound dienedioic acid is used as a diene building block. …”
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  18. 1018
    “…The resulting alkenyl silanes and stannanes show high reactivities in arylation and alkenylation by Hiyama and Stille reactions. The synthetic utility is further illustrated by the facile late-stage modifications of natural products and drug-like molecules. …”
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  19. 1019
    “…The module of integrated yoga consisted of shithilikaranavyayama (loosening and strengthening), asanas, relaxation techniques, pranayama, meditation and didactic lectures on yama, niyama, jnana yoga, bhakti yoga, and karma yoga for a healthy lifestyle change. …”
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  20. 1020
    por Soumya, MS Surya, Sarasa, TP
    Publicado 2013
    “…Procedure : 2 groups were given Triphaladhi Rasayana (15 grams of powder with ghee and honey) twice dailymorning& at bed time with milk as anupana for period of 1month along with selected yoga asanas and niyama? RESULT: Symptoms included were fever, night sweats, weight loss, lymph nodes enlargement, splenomegaly, and hepatomegaly. …”
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