Results 51 to 60 of about 60,563 (180)

Advances in Metal‐Free Transamidation: A Sustainable Approach to Amide Bond Formation

open access: yesChemistry – An Asian Journal, Volume 20, Issue 12, June 16, 2025.
This review highlights the recent developments of transamidation reactions under metal‐free reaction conditions. Various amines including weak nucleophilic amines such as aromatic amines have been used to achieve the transamidation reactions under mild and relatively green reaction conditions. Abstract The amide functionalities are a crucial functional
Niharan Sivaraj   +2 more
wiley   +1 more source

A study of polymers containing silicon- nitrogen bonds Annual summary report, May 4, 1965 - May 3, 1966 [PDF]

open access: yes
Polymers containing silicon-nitrogen bonds as elastomers with high thermal stability for aerospace ...
Burks, R. E., Jr.   +2 more
core   +1 more source

Stereoelectronic Model To Explain Highly Stereoselective Reactions of Seven-Membered-Ring Oxocarbenium-Ion Intermediates [PDF]

open access: yes, 2016
Nucleophilic attack on seven-membered-ring oxocarbenium ions is generally highly stereoselective. The preferred mode of nucleophilic attack forms the product in a conformation that minimizes transannular interactions, thus leading to different ...
Beaver, Matthew G.   +3 more
core   +2 more sources

Solvation chemistry in liquid electrolytes for rechargeable lithium batteries at low temperatures

open access: yesEcoEnergy, Volume 3, Issue 2, Page 387-421, June 2025.
This review discusses the solvation chemistry of the electrolyte in lithium batteries (LBs) at low temperature (LT). It highlights the Li+ solvation chemistry in LBs at LT, including the properties of the solvent, the solvation structure of Li+, strategies of tuning solvation chemistry via solvents/lithium salts, and characterization techniques of ...
Houzhen Li, Chuncheng Yan, Shuhua Wang
wiley   +1 more source

Ionic liquids and continuous flow processes: a good marriage to design sustainable processes [PDF]

open access: yes, 2015
In the last few years the use of Ionic Liquids (ILs) as alternative solvents for (bio)catalytic processes has increased substantially, and the benefits and different approaches reported to combine continuous flow systems and ILs are at the core of this
Altava, Belen   +4 more
core   +2 more sources

Efficient Synthesis of O-Succinimidyl-(tert-Butoxycarbonylamino)methyl Carbamates Derived from α-Amino Acids Accelerated by Ultrasound: Application to the Synthesis of Ureidodipeptides [PDF]

open access: yes, 2008
The synthesis of O-succinimidyl-(tert-butoxycarbonylamino)methyl carbamates employing isocyanates made through the Curtius rearrangement of Boc-amino acid azides in the presence of N-hydroxysuccinimide under the influence of ultrasound is ...
Kantharaju, .   +2 more
core   +1 more source

Facile syntheses of 3,4-disubstituted pyrroline nitroxides and their further synthetic applications [PDF]

open access: yes, 2016
Lithiation of an alfa,beta-unsaturated pyrroline nitroxide ester with LTMP at the beta-carbon followed by treatment with electrophiles led to a new series of 3,4-disubstituted pyrroline nitroxides, which could be used as valuable paramagnetic building ...
Hideg, Kálmán   +2 more
core   +1 more source

Synthesis of Janus compounds for the recognition of G-U mismatched nucleobase pairs [PDF]

open access: yes, 2013
The design and synthesis of two Janus-type heterocycles with the capacity to simultaneously recognize guanine and uracyl in G-U mismatched pairs through complementary hydrogen bond pairing is described.
Aboul-ela F.   +57 more
core   +2 more sources

Recent progress in the synthesis of six-membered aminocyclitols (2008-2017) [PDF]

open access: yes, 2018
Aminocyclitols are of interest as glucosidase inhibitors, as probes for the study of pseudoglycosyltransferases, and as potential therapeutics for the treatment of Gaucher’s disease.
Donaldson, William
core   +1 more source

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