Indium-mediated one-pot synthesis of benzoxazoles or oxazoles from 2-nitrophenols or 1-aryl-2-nitroethanones

Nickel-catalyzed C−H arylation of benzoxazoles and oxazoles: Benchmarking the influence of electronic, steric and leaving group variations in phenolic electrophiles

“…Benzoxazole substrates ( 4 , 5 and 6 ) were prepared using literature procedures. 16 Phenyl oxazole substrates 8 – 10 were prepared using literature procedures. 17 The pivalates, tosylates, mesylates and carbamates were prepared using literature procedures.…”

A mild convenient ultrasound assisted synthesis of 2-aryl benzoxazoles catalyzed by KCN/MWCNT as an efficient heterogeneous nanocatalyst

“…Comparison of the results of ultrasound irradiation with conventional conditions indicated that, the reaction of various aromatic aldehydes with 2-aminophenol would be catalyzed by ultrasonic irradiation [38,39,[44][45][46][47]. Chemical reactions can be catalyzed under ultrasound irradiation through acoustic cavitation: formation, growth and collapse of bubbles [48].…”

Iron‐Promoted Practical One‐Pot Synthesis of 2,5‐Disubstituted Oxazoles

“…The cyclodehydration of the α-acylamino ketones (Robinson-Gabriel reaction) [4] and the oxidation of oxazolines represent direct approaches in literature precedents. [6] However, this method was not economical and practical as indium metal is expensive. [6] However, this method was not economical and practical as indium metal is expensive.…”