Results 81 to 90 of about 3,434 (226)

Novel aziridine esters by the addition of aromatic nitrogen heterocycles to a 2H-azirine-3-carboxylic ester [PDF]

open access: yes, 2000
Methyl 2-(2,6-dichlorophenyl)-2H-azirine-3-carboxoylate acts as an efficient alkylating agent for a variety of five-membered aromatic heterocycles. The aziridines derived from heterocycles that bear an alpha-carbonyl substituent react with TFA to give ...
Alves, Maria José Chão   +4 more
core   +1 more source

Aromaticity and Photoreactivity of 4‐ and 3‐Nitrenopyridine 1‐Oxides and Phenylnitrene

open access: yesJournal of Physical Organic Chemistry, Volume 38, Issue 10, October 2025.
NICS(1.7)zz, ACID, and spin density calculations reveal that triplet 4‐nitrenopyridine oxide, 3‐nitrenopyridine oxide, and phenylnitrene display Baird triplet aromaticity. These findings help clarify the relationships between structure and aromaticity in triplet arylnitrenes. ABSTRACT The pursuit of sustainable organic synthesis has renewed interest in
Fiona J. Wasson   +7 more
wiley   +1 more source

Intermolecular alkyl radical addition to methyl 2-(2,6-Dichlorophenyl)-2H-azirine-3-carboxylate [PDF]

open access: yes, 2012
The 2H-azirine 1 acts as an effective radical acceptor for secondary and tertiary alkyl iodides mediated by triethylborane.
Alves, Maria José Chão   +3 more
core  

Intermolecular alkyl radical addition to methyl 2-(2,6-dichlorophenyl)-2H-azirine-3-carboxylate [PDF]

open access: yes, 2003
The 2H-azirine 1 acts as an effective radical acceptor for secondary and tertiary alkyl iodides mediated by triethylborane. The addition proceeds with high regio- and diastereo-selectivity.The present work has been supported by Fundação para a Ciência e ...
Alves, Maria José Chão   +3 more
core   +1 more source

Aziridine and azirine carboxylic esters [PDF]

open access: yesPure and Applied Chemistry, 1996
Abstract
Binne Zwandenburg, L. Thijs
openaire   +1 more source

I. The Synthesis, Absolute Configuration, and Stereochemistry of Thermal Decomposition of (+)-3R,5R- and (+)-3R,5S-3-Ethyl-5-Methyl-1-Pyrazoline. II. Mechanistic Investigations of the Thermal Decompositions of 2H-Azirines [PDF]

open access: yes, 1976
I. (+)-3R,5R- and (+)-3R,5S-3-ethyl-5-methyl-1-pyrazolines (34T and 34C, respectively) have been prepared in optically active form. Their stereochemistries have been determined by correlation with (-)-R-3-hexanol and (-)-R-2-bromohexane.
Wendling, Larry Allan
core   +1 more source

A Systematic Review of Synthetic and Anticancer and Antimicrobial Activity of Quinazoline/Quinazolin‐4‐one Analogues

open access: yesChemistryOpen, Volume 14, Issue 7, July 2025.
Quinazoline represents an important class of heterocycles with diverse medicinal and pharmacological significance. This review systematically examines scholarly efforts toward understanding different synthetic pathways emphasizing the role of metal and non‐metal catalysts including some miscellaneous reagents employed in the synthesis of quinazoline ...
Neha Manhas   +4 more
wiley   +1 more source

University of Zurich Hosts Symposium in Honor of Professor Heinz Heimgartner

open access: yesCHIMIA, 2006
The Institute of Organic Chemistry of the University of Zürich hosted a symposium in honor of Prof. Heinz Heimgartner on June 9, 2006. PO Dr. Simon M. Ametamey, Dr. Kurt Dietliker, Prof. Grzegorg Mloston, Dr. Daniel Obrecht, Prof.
Annette Rahm
doaj   +1 more source

Metallkomplexe mit biologisch wichtigen Liganden, LXX [PDF]

open access: yes, 1994
Metal Complexes of Biologically Important Ligands, LXX[1].- Synthesis, Stereochemistry and Reactions of Ruthenium(II) and Osmium(II) Complexes with -Amino Carboxylates[Note ][Herrn Professor Helmut Werner zum 60.
Ahmad   +33 more
core   +1 more source

Methyl (1aRS,7aSR)-7-formyl-1a-phenyl-1,1a-dihydroazirino[2,3-b]benzo[e][1,4]thiazine-7a(7H)-carboxylate

open access: yesMolbank
The first representative of the aziridine-fused benzo[e][1,4]thiazine series was synthesized from methyl 2-bromo-2-phenyl-2H-azirine-2-carboxylate and benzo[d]thiazole in 74% yield.
Ilya P. Filippov   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy