Results 101 to 110 of about 7,765 (231)

Role of Reversible Dimerization in Reactions of Amphoteric Aziridine Aldehydes

open access: yes, 2016
Unprotected aziridine aldehydes belong to the amphoteric class of molecules by virtue of their dual nucleophilicity/electrophilicity. The dimeric nature of these molecules, brought together by a weak and reversible aminal “connection”, was found to be an
Takahito Kasahara (1702036)   +6 more
core   +1 more source

Small Nitrogen Heterocycles Containing 1,2,3-Triazoles in the Side Chain

open access: yes
New libraries of aziridine and azetidine derivatives containing 1,4-disubstituted 1,2,3-triazole in the side chain as well as aziridine derivatives containing 1,5-disubstituted 1,2,3-triazole in the side chain were synthesized by transition metals ...
Suta, Krista   +2 more
core  

Studies on Substituted Aziridine-Boranes

open access: yes, 1971
2-Methylaziridine—borane, 1,2-dimethylaziridine-borane, 2,2-dimethylaziridine-borane, N-ethylaziridine-borane, 2-ethyl- aziridine-borane, and 2~phenylaziridine-borane have been prepared for the first time.
Lee, Jae
core  

Synthetic Applications of N-H Aziridine Containing Compounds

open access: yes, 2010
Unprotected N-H aziridine aldehydes are surprisingly stable compounds which can undergo reactions in the absence of protecting groups. In total, three different transformations were explored during my Master’s thesis.
Decker, Shannon Marie
core  

A Linchpin Synthesis of 6‑Hydroxyceramides from Aziridine Aldehydes

open access: yes, 2016
A chemoselective N-oxidation/Meisenheimer rearrangement protocol was developed to generate vinylaziridine scaffolds from aziridine aldehydes. A subsequent Lewis acid-mediated aziridine ring opening with carboxylic acid nucleophiles followed by N–O bond ...
Sean. K. Liew (3365432)   +2 more
core   +1 more source

Secondary 3‐Chloropiperidines: Powerful Alkylating Agents

open access: yesChemistryOpen
In previous works, we demonstrated that tertiary 3‐chloropiperidines are potent chemotherapeutics, alkylating the DNA through the formation of bicyclic aziridinium ions. Herein, we report the synthesis of novel secondary 3‐chloropiperidine analogues. The
Mats Georg   +5 more
doaj   +1 more source

Chemically accurate conformational energies for aziridine-2-carbonitrile

open access: yes, 2001
The energy of trans-aziridine-2-carbonitrile relative to cis-aziridine-2-carbonitrile was determined by carrying out extensive ab initio computations.
Gregory S. Tschumper   +1 more
core   +1 more source

A Facile Synthesis of Amino Acid Derivatives from Aziridines in Liquid Sulfur Dioxide

open access: yes
In the past decades aziridines have played a role of versatile intermediates and important precursors for the synthesis of nitrogencontaining biologically active compounds. Modification of aziridine cycle leads to formation of agents of different classes,
Lugiņina, Jevgeņija, Turks, Māris
core  

Recent progress in asymmetric synthesis of aziridine derivatives (microreview)

open access: yes, 2018
This microreview describes recent advances in asymmetric synthesis of aziridine derivatives, which have been published over the last two ...
Doğan, Özdemir, Polat-Cakir, Sidika
core   +1 more source

Ring-Opening Reactions of the N‑4-Nosyl Hough–Richardson Aziridine with Nitrogen Nucleophiles

open access: yes, 2016
Dinosylated α-d-glucopyranoside was directly transformed into α-d-altropyranosides via in situ formed N-4-nosyl Hough–Richardson aziridine with nitrogen nucleophiles under mild conditions in fair to excellent yields.
Tomáš Ručil (3388715)   +2 more
core   +1 more source

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