Results 31 to 40 of about 173,183 (235)

Preparation and in situ use of unstable N-alkyl α-diazo-γ-butyrolactams in RhII-catalyzed X–H insertion reactions

open access: yesBeilstein Journal of Organic Chemistry, 2020
N-Alkyl α-diazo-γ-butyrolactams, previously found to be unstable and to undergo unproductive dimerization to bishydrazones, were successfully converted immediately to various X–H insertion products with alcohols, aromatic amines and thiols via an in situ
Maria Eremeyeva   +3 more
doaj   +1 more source

Site-specific Deaminative Trifluoromethylation of Aliphatic Primary Amines [PDF]

open access: yes, 2023
The introduction of trifluoromethyl groups into organic molecules is of paramount importance in modern synthetic chemistry and medicinal chemistry. While methods for constructing C(sp2)-CF3 bonds have been well established, the advancement of practical ...
Yin , Li   +4 more
core   +2 more sources

Michael addition of aromatic and aliphatic amines to unsaturated olefines in the presence of TMSCl under solvent free conditions [PDF]

open access: yesشیمی کاربردی روز, 2008
An operationally simple and highly fast protocol for TMSCl (10 mol%) catalyzed conjugate addition of aromatic and aliphatic amines derivatives to unsaturated carbonyl compounds in good to excellent yields has been developed.
Najmadin Azizi
doaj   +1 more source

Copper-Catalyzed Alkylation of Aliphatic Amines Induced by Visible Light. [PDF]

open access: yesJ Am Chem Soc, 2017
Although the alkylation of an amine by an alkyl halide serves as a “textbook example” of a nucleophilic substitution reaction, the selective mono-alkylation of aliphatic amines by unactivated, hindered halides persists as a largely unsolved challenge in ...
Matier CD, Schwaben J, Peters JC, Fu GC.
europepmc   +2 more sources

Phthaloylation of amines, hydrazines, and hydrazides by N-substituted phthalimides using recyclable sulfated polyborate

open access: yesResults in Chemistry, 2022
An efficient, fast, and environmentally gentle protocol for phthaloylation of amines, hydrazines and hydrazides via transamidation is described. The current research focuses on the phthaloylation of alicyclic, aliphatic, aromatic, heterocyclic amines ...
Prerna Ganwir   +2 more
doaj   +1 more source

Mild Biamidine-Transfer Conditions for the Synthesis of Aliphatic Biguanides

open access: yesSynOpen, 2021
This study focuses on the development of new synthetic pathways to monosubstituted biguanides from amines. An exhaustive comparison of the conditions and reagents used for biamidine transfer was performed.
Rostyslav Bardovskyi   +3 more
doaj   +1 more source

Catalytic asymmetric hydroamination of unactivated internal olefins to aliphatic amines [PDF]

open access: yes, 2015
Available in PMC 2016 July 03.Catalytic assembly of enantiopure aliphatic amines from abundant and readily available precursors has long been recognized as a paramount challenge in synthetic chemistry.
Niu, Dawen   +5 more
core   +1 more source

Semiconducting Polymers Post‐Functionalized With Ureido‐Pyrimidinone for Robust Stretchable Transistors

open access: yesAdvanced Functional Materials, EarlyView.
The design of intrinsically robust stretchable semiconducting polymers was achieved through OTBS‐mediated post‐functionalization of PDPP2T side chains with UPy units, generating dual hydrogen‐bonding motifs comprising weaker urethane linkages and strong quadruple UPy interactions along the long alkyl side chain, which is crucial for achieving desirable
Dinda Bazliah   +7 more
wiley   +1 more source

Deaminative bromination, chlorination, and iodination of primary amines

open access: yesiScience, 2023
Summary: The primary amino group has been seldom utilized as a transformable functionality in organic synthesis. Reported herein is a deaminative halogenation of primary amines using N-anomeric amide as the nitrogen-deletion reagent.
Jiang-Hao Xue   +6 more
doaj   +1 more source

Confinement in Metal‐Organic Frameworks as a Route to Harnessing Liquid Barocalorics in the Solid‐State

open access: yesAdvanced Functional Materials, EarlyView.
Encapsulation of solid–liquid barocalorics (BC) within MOFs harnesses their colossal BC performance whilst allowing active control of BC properties through BC‐MOF interactions. ABSTRACT Barocaloric (BC) effects at liquid–vapor transitions in hydrofluorocarbons drive most commercial technologies used for heating and cooling in the heating, ventilation ...
Ming Zeng   +8 more
wiley   +1 more source

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