Results 81 to 90 of about 5,187 (206)
, 2015 The C–H arylation of (benzo)oxazoles or (benzo)thiazoles with aryltrimethylammonium triflates was carried out via Pd-catalyzed C–H/C–N cleavage.
Jian-Long Tao (1456900) +2 more
core +1 more source
Active γ-manganese dioxide promoted conversion of 4,5-dihydro-1,2-oxazoles to 1,2-oxazoles.
, 1977 Dehydrogenation of seven dihydrooxazoles I (R1 = Ph, octyl, Me, Ph, 2-naphthyl, CO2Me, hexyl; R2 = H, NO2; R3 = Me, Ph, (CH2)2CO2Me) with γ-MnO2 gave 97-100% oxazoles ...
BENETTI, Simonetta +3 more
core +1 more source
, 2014 WOS: 000330163300031Furan-3-one derivatives 1 were converted into 2-hydroxy-pyrrole-3-ones 4 by reacting with various - and -amino acids. In contrast, the reaction of furan-3-ones and 1-aminocyclobutanecarboxylic acid afforded spiro-pyrrolo[2,1-b][1,3 ...
Üngören, Sevket Hakan +8 more
core +1 more source
Journal of Chemistry, 2015 Aromaticities of five membered heterocycles, containing up to three heteroatoms, are quantified through the dimethyldihydropyrene (DHP) probe. Bond fixation caused by the fusion of heterocycles to the dimethyldihydropyrene nucleus (DHPN) was measured by ...
Maria, Khurshid Ayub
doaj +1 more source
HIGHLY EFFICIENT SYNTHESIS OF 2,4-DISUBSTITUTED OXAZOLES THROUGH PALLADIUM/COPPER COMEDIATED DIRECT ARYLATION REACTION [PDF]
, 2018 Objective: The aim of the present study is to synthesize 2,4-disubstituted oxazoles through palladium/copper comediated direct arylation reaction.Methods: 2,4-disubstituted oxazoles (3a-i) have been synthesized by the reaction of 4-substituted oxazole ...
Saxena, Abhishek S +4 more
core +1 more source
Results in ChemistryA new series of aryl derivatives of 4-(1H-imidazol-2-yl)-2-(pyrimidin-5-yl)oxazoles 11a–j were synthesised and their structures were characterized by analytical techniques.
Divya Komirishetti, Vasantha Mittapelli
doaj +1 more source
Synthesis of substituted oxazoles via Pd-catalyzed tandem oxidative cyclization
, 2017 An easy approach to access multisubstituted oxazoles via tandem oxidative cyclization is developed.
Wei Zhang +4 more
core +1 more source
Acta Chimica SlovenicaA series of novel 2-(1-(4-(4-chlorophenyl)thiazol-2-yl)-1H-pyrazol-4-yl)benzo[d]oxazoles 5 were synthesized from 2-[(E)-{1-[4-(4-chlorophenyl)-1,3-thiazol-2-yl]-1H-pyrazol-4-yl}(hydroxyimino)methyl]phenol 4 through Beckmann rearrangement.
Nirmala Darekar +7 more
doaj +1 more source
A new route to functionalised oxazoles
, 1996 Functionalised oxazoles 4 are prepared from amides 1 by rhodium cartenoid N-H insertion reaction to give beta-carbonyl amides 3 followed by cyclodehydration with triphenylphosphine-iodine-triethylamine.
Bagley, M C +4 more
core +2 more sources