Results 71 to 80 of about 1,246 (202)

Photochemistry of 3-amino-1,2-benzisoxazole: unexpected photoisomerization of an amino-spiro-2H-azirine to a 1H-diazirine

, 2016
UV irradiation of 3-amino-1,2-benzisoxazole isolated in an argon matrix leads to the formation of an amino-spiro-2H-azirine. The amino-spiro-2H-azirine was found to photoisomerize back to 3-amino-1,2-benzisoxazole and also to a 1H-diazirine, which ...
MARTINS RIBEIRO DA SILVA LOURENCO, Rui Fausto, Nunes, Cláudio M., Pinto, Sandra M. V., Reva, Igor   +3 more
core   +1 more source

Unusual Photochemical C−N Bond Cleavage in the Novel Methyl 2-Chloro-3-methyl-2H-azirine-2-carboxylate [PDF]

, 2006
The structure, preferred conformers, vibrational spectrum, and photochemical behavior of the novel azirine, methyl 2-chloro-3-methyl-2H-azirine-2-carboxylate (MCMAC) were investigated in low-temperature matrixes and in the neat solid amorphous state by ...
Andrea Gómez-Zavaglia, Pinho e Melo, Teresa M.V.D, Melo, Teresa M. V. D. Pinho e, Teresa M. V. D. Pinho e Melo, Gómez-Zavaglia, Andrea, Kaczor, Agnieszka, Agnieszka Kaczor, Pinho e Melo, Teresa M. V. D., Ana L. Cardoso, Cardoso, Ana L., Fausto, Rui, Gomez Zavaglia, Andrea, Rui Fausto   +12 more
core   +1 more source

Nucleophile-Induced Rearrangement of 2H‑Azirine-2-carbonyl Azides to 2‑(1H‑Tetrazol-1-yl)acetic Acid Derivatives

, 2021
2H-Azirine-2-carbonyl azides undergo a rearrangement into derivatives of 2-(1H-tetrazol-1-yl)­acetic acid when interacting with O- and S-nucleophiles at room temperature. The reaction is catalyzed by tertiary amines or hydrazoic acid.
Dar’ya V. Spiridonova, Alexander F. Khlebnikov (1537960), Mikhail S. Novikov, Mikhail S. Novikov (1537957), Alexander F. Khlebnikov, Olesya A. Tomashenko (4241359), Olesya A. Tomashenko, Nikita I. Efimenko, Nikita I. Efimenko (11267198), Dar’ya V. Spiridonova (11267201)   +9 more
core   +1 more source

Non-natural 2H-azirine-2-carboxylic acids: an expedient synthesis and antimicrobial activity

, 2019
Non-natural 2H-azirine-2-carboxylic acids were obtained in high yields by FeCl2-catalyzed isomerization of 5-chloroisoxazoles to azirine-2-carbonyl chlorides followed by their hydrolysis.
Rogacheva, Elizaveta V., Kraeva, Liudmila A., Sakharov, Pavel A., Tennikova, Tatiana B., Sharoyko, Vladimir V., Rostovskii, Nikolai V., Koronatov, Alexander N., Khlebnikov, Alexander F., Novikov, Mikhail S., Glukharev, Artem G.   +9 more
core   +1 more source

University of Zurich Hosts Symposium in Honor of Professor Heinz Heimgartner

CHIMIA, 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

Push–Pull Ynamines and Push–Pull Ynamides: Synthesis, Structure, Reactivity, and Application

European Journal of Organic Chemistry, Volume 29, Issue 19, 22 May 2026.
Push–pull ynamines and push–pull ynamides, which carry an EWG and an amino or amido group as EDG, are highly interesting classes of EDG‐EWG alkynes that have been intensively studied due to their exceptional reactivity. In this review, the synthesis, structure, reactivity, and application of push–pull ynamines, push–pull ynecarbamates, push–pull ...
Hans‐Joachim Gais
wiley   +1 more source

Ethyl 2-(Diisopropoxyphosphoryl)-2H-azirine-3-carboxylate: reactions with Nucleophilic 1,3-Dienes [PDF]

, 2012
Ethyl 2-(diisopropoxyphosphoryl)-2H-azirine-3-carboxylate, the first example of an azirine bearing simultaneously ester and phosphonate groups was generated in situ and reacted with a number of 1,3-dienes.
Alves, Maria José Chão, Lemos, A.
core  

Synthesis of trifluoromethylated 2H-azirines through Togni reagent-mediated trifluoromethylation followed by PhIO-mediated azirination

Beilstein Journal of Organic Chemistry, 2018
The reaction of enamine compounds with the Togni reagent in the presence of CuI afforded β-trifluoromethylated enamine intermediates, which were converted directly to biologically interesting trifluoromethylated 2H-azirines by an iodosobenzene (PhIO ...
Jiyun Sun, Xiaohua Zhen, Huaibin Ge, Guangtao Zhang, Xuechan An, Yunfei Du   +5 more
doaj   +1 more source

Asymmetric Synthesis of 2H-Azirine Carboxylic Esters by an Alkaloid-Mediated Neber Reaction

, 2016
Asymmetric Synthesis of 2H-Azirine Carboxylic Esters by an Alkaloid-Mediated Neber ...
Gerry J. A. Ariaans (2726719), Mariëlle M. H. Verstappen (2997459), Binne Zwanenburg (2529067)   +2 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

Molbank
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, Anastasiya V. Agafonova, Nikolai V. Rostovskii, Mikhail S. Novikov   +3 more
doaj   +1 more source