Results 231 to 240 of about 157,767 (395)

Note on the Use of Active Esters in Combination with 1,2,4-Triazole in Solid Phase Peptide Synthesis. [PDF]

open access: bronze, 1970
Ulf Ragnarsson   +4 more
openalex   +1 more source

Integrating Catalysis and Analysis: Accelerated Asymmetric Reaction Development with a Multitasking Reactivity Umpolung/Chiroptical Reporter Auxiliary

open access: yesChemistry – A European Journal, Accepted Article.
High‐throughput asymmetric reaction development of an organocatalytic Michael addition is achieved by using a readily available isatin molecule as amine protecting group, reagent for reactivity Umpolung, and as chiroptical yield and enantioselectivity reporter.
F Safia Kariapper   +2 more
wiley   +1 more source

Fluorescent Carbazole‐Derived Aza[5]Helicenes: Synthesis, Functionalization, and Characterization

open access: yesChemistry – A European Journal, EarlyView.
Variously substituted indolophenanthridines, indolocarbazoles, and cinnolinocarbazoles synthesized by ortho fusion from teraryl precursors show significant Stokes shifts, especially for the protonated states of indolophenanthridines and cinnolinocarbazole.
Inka Marten   +2 more
wiley   +1 more source

Hydrogen Controls the Heavy Atom Roaming in Transient Negative Ion. [PDF]

open access: yesJ Am Chem Soc
Pataraprasitpon S   +4 more
europepmc   +1 more source

Directional Macrocycle Transport, Release, and Recapture Enabled by a Rotaxane Transporter

open access: yesChemistry – A European Journal, EarlyView.
This study represents a bistable rotaxane that enables the directional shuttling, release, and recapture of a dibenzo‐24‐crown‐8 macrocycle upon addition of suitable chemical stimuli. This two‐step molecular transport and release can be followed by NMR and distinct changes in the molecular fluorescence. Based on rational molecular design, the liberated
Sohom Kundu   +3 more
wiley   +1 more source

Core‐Twisted, Cationic Perylene Diimides; Homochiral Dimerization and Chiroptical Anion Sensing

open access: yesChemistry – A European Journal, EarlyView.
The installation of two 3‐methyl‐1,2,3‐triazolium heterocycles on the aromatic core of a perylene diimide (PDI) generates a twisted and cationic organic dye. As potent hydrogen bond donors, these groups enable the PDI to self‐assemble into discrete and robust homochiral dimers in solution.
Denis Hartmann   +3 more
wiley   +1 more source

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