Results 211 to 220 of about 141,510 (340)

Improving the Photochemical Skeletal Enlargement of Pyridines to 1,2‐Diazepines with Isocyanates

open access: yesAdvanced Synthesis &Catalysis, Volume 367, Issue 5, March 4, 2025.
Abstract In this work, we extend the one‐pot protocol to synthesize 1,2‐diazepines from commercially available and cheap starting materials. Capitalizing on isocyanate derivatives as activating agents, the photochemical skeletal enlargement occurs, while preserving key functional groups embedded in more than 30 substrates.
Clément Ghiazza   +3 more
wiley   +1 more source

The salty tango of brine composition and UV photochemistry effects on Halobacterium salinarum cell envelope biosignature preservation. [PDF]

open access: yesCommun Biol
Bourmancé L   +8 more
europepmc   +1 more source

Multiphoton Multicomponent Reactions: Discovery of the 2‐Photon Ketene 4‐Component Reaction (2P‐K‐4CR)

open access: yesAdvanced Synthesis &Catalysis, EarlyView.
Multicomponent reactions triggered by multiple photons: complex heterocycles can be synthesized in a regio‐ and stereoselective manner via a double photoactivation using visible light from simple building blocks, exploiting the combination of ketene 3‐component reaction and Paternò–Büchi cycloaddition.
Federica Minuto   +7 more
wiley   +1 more source

Visible Light‐Promoted Esterification of Carboxylic Acids via Photoacid Generation Catalysis

open access: yesAdvanced Synthesis &Catalysis, EarlyView.
A novel, environmentally friendly photochemical method for the esterification of carboxylic acids with alcohols using arylazo sulfones as photoacid generators was developed. This approach avoids traditional acidic catalysts, purification did not require chromatography and the method proved effective under continuous flow conditions for enhanced ...
Valentina Benazzi   +7 more
wiley   +1 more source

Thermo-Photochemistry

open access: yesCHIMIA, 1989
Augustin J. McEvoy   +4 more
doaj   +1 more source

Modulation of cyanobacterial Photosystem I protein environment and spectral capacity in response to changes in electron flow pathways and photon flux. [PDF]

open access: yesJ Biol Chem
Smolinski SL   +7 more
europepmc   +1 more source

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