Results 41 to 50 of about 138,420 (314)

Vertical distribution of aldehydes and phytoplankton structure: a case study of urban lake [PDF]

open access: yesArchives of Environmental Protection, 2020
In water systems, both biologically and chemically synthesized molecules may reduce environmental quality and influence essential ecosystems structure and function.
Elżbieta Szeląg-Wasielewska   +1 more
doaj   +1 more source

An environmentally benign one-pot synthesis of 1,2-dihydro-1-aryl-3H-naphth[1,2-e][1,3]oxazin-3-one derivatives catalysed by phosphomolybdic acid [PDF]

open access: yesJournal of the Serbian Chemical Society, 2011
A phosphomolybdic acid catalysed novel method for the synthesis of 1,2-dihydro-1-aryl-3H-naphth[1,2-e][1,3]oxazin-3-one derivatives by a one-pot, three-component reaction of β-naphthol, aromatic aldehydes and urea in excellent yields is described.
ATUL CHASKAR   +4 more
doaj  

Cu-Catalyzed Cyclization/Coupling of Alkenyl Aldimines. Indolization of Aldehydes, Anilines and Arylzinc Reagents [PDF]

open access: yes, 2022
We report a Cu(II)-catalyzed cyclization/coupling of alkenyl aldimines with arylzinc reagents to create complex indole-3-diarylmethane derivatives. The aldimines are readily available by simple dehydration, making the process a formal three-component ...
Nicholas C., Secosky   +6 more
core   +1 more source

One-pot synthesis of 1,3,5-triazine-2,4-dithione derivatives via three-component reactions

open access: yesBeilstein Journal of Organic Chemistry, 2020
A catalyst-free one-pot synthetic methodology was developed for the preparation of 1,3,5-triazine-2,4-dithione derivatives through three-component reactions of arylaldehydes, thiourea, and orthoformates.
Gui-Feng Kang, Gang Zhang
doaj   +1 more source

Recyclable enamine catalysts for asymmetric direct cross-aldol reaction of aldehydes in emulsion media [PDF]

open access: yes, 2011
Recyclable Enamine Catalysts for Asymmetric Direct Cross-aldol Reaction of Aldehydes in Emulsion MediaHighly diastereo- and enantioselective cross-aldol reactions of aldehydes (> 20 : 1 dr, 99% ee), catalyzed by chiral diamine-polyoxometalate acid ...
Liu, Yan   +10 more
core   +1 more source

@Co Nanoparticle‐based Catalyst for Efficient Selective Transfer Hydrogenation of α,β‐Unsaturated Aldehydes [PDF]

open access: yes, 2020
Currently, developing simple and effective catalysts for selective hydrogenation of α,β‐unsaturated aldehydes to unsaturated alcohols is challenging.
Zhao, Huijun   +13 more
core   +1 more source

A novel quinazolinone insulin receptor inhibitor and its synergy with an EGFR inhibitor in glucose‐driven glioblastoma

open access: yesMolecular Oncology, EarlyView.
The novel styrylquinazolinone‐based molecule W1B effectively suppresses glioblastoma by inhibiting IGF1R and EGFR. In high‐glucose microenvironments driving tumor resistance, W1B acts synergistically with the EGFR inhibitor dacomitinib. This combination safely blocks compensatory survival signaling in zebrafish xenograft models. Showcasing promising in
Patryk Rurka   +9 more
wiley   +1 more source

Loss of proton‐sensing TDAG8 increases tumor progression in mouse models of colon cancer

open access: yesMolecular Oncology, EarlyView.
Loss of the pH‐sensing receptor TDAG8 accelerates colorectal cancer progression in mice. Animals lacking TDAG8 expression had increased tumor growth, DNA damage, and recruitment of tumor‐associated immune cells, including macrophages, neutrophils, and monocytes.
Ermanno Malagola   +11 more
wiley   +1 more source

Aldehydes and Ketones Influence Reactivity and Selectivity in Nickel-Catalyzed Suzuki-Miyaura Reactions [PDF]

open access: yes, 2019
We show that the energetically-favorable coordination of aldehydes and ketones – but not esters – to nickel(0) during Suzuki-Miyaura reactions can lead either to exquisite selectivity and enhanced reactivity, or to the inhibitionof the reaction.
Alasdair, Cooper   +4 more
core   +1 more source

Enantioselective Michael Addition of Aldehydes to Maleimides Organocatalyzed by a Chiral Primary Amine-Salicylamide

open access: yesMolecules, 2018
A primary amine-salicylamide derived from chiral trans-cyclohexane-1,2-diamine was used as an organocatalyst for the enantioselective conjugate addition of aldehydes, mainly α,α-disubstituted to N-substituted maleimides.
Alejandro Torregrosa-Chinillach   +5 more
doaj   +1 more source

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