Results 71 to 80 of about 913 (183)

Ortho-Palladation of (Z)-2-Aryl-4-Arylidene-5(4H)-Oxazolones. Structure and Functionalization

, 2012
Ortho-palladated complexes of (Z)-2-aryl-4-arylidene-5(4H)-oxazolones have been prepared through oxidative addition. The reaction of (Z)-2-phenyl-4-(2-bromobenzylidene)-5(4H)-oxazolone (4) with Pd2(dba)3·CHCl3 gives the six-membered cyclopalladated ...
Cativiela, Carlos, Roiban, Gheorghe-Doru, Soler, Tatiana, Serrano, Elena, Urriolabeitia, Esteban P.   +4 more
core   +1 more source

Fluorescence Amplification of Unsaturated Oxazolones Using Palladium: Photophysical and Computational Studies. [PDF]

Inorg Chem, 2023
Dalmau D, Crespo O, Matxain JM, Urriolabeitia EP.   +3 more
europepmc   +1 more source

Synthesis and Antifungal Activity of Oxazolones

, 1982
Department of Chemistry, Punjab Agricultural University, Ludhiana-141 004 Manuscript received 5 February 1981, revised 22 December 1981, accepted 11 March 1982.
M. R. MANRAO, R. C. SHARMA, B. S. DHIR, P. S.KALSI   +3 more
openaire   +1 more source

5(4H)-Oxazolones. Part X. Acid and base effects on the translactonization reaction of 4-(2-oxa-alkylidene)-5(4H)-oxazolones: New synthesis of 5-alkylidene-3-benzoylamino-2(5H)-furanones

, 1997
4-(2-Oxa-alkylidene)-5(4H)-oxazolones (azlactones) 1 can be transformed in acidic conditions (anhydrous HBr/CHCl3) into 5-alkylidene-3-benzoylamino-2(5H)-furanones 2 which have Z configuration at the exocyclic double bond.
M.L. Gelmi, F. Clerici, A. Melis
core   +1 more source

Reactive intermediates in peptide synthesis: First crystal structures and ab initio calculations of 2-alkoxy-5(4H)-oxazolones from urethane-protected amino acids

, 1997
The structures of the 2-alkoxy-5(4H)-oxazolones derived from 2,2,6,6-tetramethyl-4-[(benzyloxycarbonyl)amino]-1-oxypiperidine-4-carboxylic acid and 2,2,6,6-tetramethyl-4-[(9'-fluorenylmethycarbonyl)amino]-1-oxycarbonylpiperidine-4-carboxylic acid have ...
BAGNO, ALESSANDRO, VALLE G, TONIOLO, CLAUDIO, FORMAGGIO, FERNANDO, CRISMA M   +4 more
core   +1 more source

Deciphering the biosynthesis of a novel lipid in Mycobacterium tuberculosis expands the known roles of the nitroreductase superfamily. [PDF]

J Biol Chem, 2023
Grigg JC, Copp JN, Krekhno JMC, Liu J, Ibrahimova A, Eltis LD.   +5 more
europepmc   +1 more source

5(4H)-oxazolones. Part XI. Cycloaddition reaction of oxazolones and munchnones to triphenylvinylphosphonium salts as synthetic equivalents of alkynes

, 1998
5(4H)-Oxazolones 1 and milnchnones 3 are reacted with triphenylvinylphosphonium bromide 2a to give, through a cycloaddition reaction, pyrrole derivatives 4a-d and 7a-c unsubstituted at C-3 and C-4.
M.L. Gelmi, P. Trimarco, F. Clerici
core   +1 more source

Stereoselective, Ruthenium-Photocatalyzed Synthesis of 1,2-Diaminotruxinic Bis-amino Acids from 4-Arylidene-5(4H)-oxazolones. [PDF]

J Org Chem, 2022
Sierra S, Gomez MV, Jiménez AI, Pop A, Silvestru C, Marín ML, Boscá F, Sastre G, Gómez-Bengoa E, Urriolabeitia EP.   +9 more
europepmc   +1 more source

A Carbodiimide-Fueled Reaction Cycle That Forms Transient 5(4H)-Oxazolones. [PDF]

J Am Chem Soc, 2023
Chen X, Stasi M, Rodon-Fores J, Großmann PF, Bergmann AM, Dai K, Tena-Solsona M, Rieger B, Boekhoven J.   +8 more
europepmc   +1 more source

Alkylation of oxazolones and related heterocycles through an SN1 reaction.

The alkylation of oxazolones through an SN1 reaction by using stabilized carbocations is reported. The reaction (catalyzed by Brønsted acids, such as TFA or thioureas) affords the final compounds in excellent yields.
Font Bardia, Ma. Mercedes, Moyano i Baldoire, Albert, Calvet Pallàs, Maria Teresa, Rios, Ramon, Alba, Andrea-Nekane R.   +4 more
core   +1 more source