Results 11 to 20 of about 8,888,554 (384)

Zinc Acetate Catalyzed Stereoselective 1,2-trans-Glycosylation Using Glycosyl Chlorides

open access: yesSynOpen, 2022
We report a strategy for the stereoselective synthesis of 1,2-trans-glycosides in the absence of neighboring group participation. The present protocol for the selective glycosylation mainly relies on catalyst control rather than protecting group ...
Mohammad Saif Ali   +3 more
doaj   +1 more source

Development of high‐throughput wet‐chemical synthesis techniques for material research

open access: yesMaterials Genome Engineering Advances, 2023
Combining material big data with artificial intelligence constitutes the fourth paradigm of material research. However, the sluggish development of high‐throughput (HT) experimentation has resulted in a lack of experimentally verified and validated ...
Zhuyang Chen   +7 more
semanticscholar   +1 more source

An artificial intelligence enabled chemical synthesis robot for exploration and optimization of nanomaterials

open access: yesScience Advances, 2022
We present an autonomous chemical synthesis robot for the exploration, discovery, and optimization of nanostructures driven by real-time spectroscopic feedback, theory, and machine learning algorithms that control the reaction conditions and allow the ...
Yibin Jiang   +5 more
semanticscholar   +1 more source

Comparative Reactivity of Different Polyols in the PET Saponification Process

open access: yesAppliedChem, 2023
This work is concerned with polyethylene terephthalate (PET) saponification by different potassium compounds in various polyols as well as biodiesel’s main by-product, crude glycerol.
Valentin N. Sapunov   +8 more
doaj   +1 more source

Triptolide: pharmacological spectrum, biosynthesis, chemical synthesis and derivatives

open access: yesTheranostics, 2021
Triptolide, an abietane-type diterpenoid isolated from Tripterygium wilfordii Hook. F., has significant pharmacological activity. Research results show that triptolide has obvious inhibitory effects on many solid tumors.
Jie Gao   +5 more
semanticscholar   +1 more source

Chemical Synthesis, Characterization and Properties of Multi-Element Nanoparticles.

open access: yesAngewandte Chemie, 2022
Multi-element nanoparticles (NPs) consisting of five or more elements have been increasingly studied in the past 5 years. Their emergence is taking materials science one step further because they exhibit superior properties to conventional NPs in a range
K. Kusada   +3 more
semanticscholar   +1 more source

Stereoselective Synthesis of the C19–C39 Fragment of Bastimolide A

open access: yesSynOpen, 2021
This paper describes the synthesis of the C19–C39 fragment of the antimalarial natural product bastimolide A via addition of a functionalized C19–C26 alkyne fragment to a C27–C39 aldehyde fragment.
Nemilikonda Sravan Kumar   +2 more
doaj   +1 more source

The nature of the potassium compound acting as a promoter in iron-alumina catalysts for ammonia synthesis [PDF]

open access: yes, 1975
The chemical form of the potassium promoter on an iron-alumina catalyst during ammonia synthesis has been studied by two methods, viz, (i) the measurement of the equilibrium constant of the process KNH2 + H2 KH + NH3, and (ii) chemical analysis of the ...
Bolink, W.J.   +3 more
core   +3 more sources

Flow parallel synthesizer for multiplex synthesis of aryl diazonium libraries via efficient parameter screening

open access: yesCommunications Chemistry, 2021
Flow reactors have applications in reaction screening and optimisation, but typically operate in linear or radial configurations. Here a bench-top parallel flow synthesiser which distributes reagents between sixteen microreactors allows for rapid ...
Gwang-Noh Ahn   +5 more
doaj   +1 more source

Chemical asymmetric synthesis

open access: yesNature, 1989
Thalidomide comes in two forms: a left-handed compound which is a powerful tranquilizer, and a right-handed version which can disrupt fetal development causing severe handicap. As a necessary consequence of synthetic methods available in the early 1960s the two forms were present in equal proportions in the manufactured drug, with catastrophic ...
Brown, J, Davies, S
openaire   +2 more sources

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