142312-21-8Relevant articles and documents
Catalytic Aerobic Cross-Dehydrogenative Coupling of Azlactones en Route to α,α-Disubstituted α-Amino Acids
Tsuji, Taro,Tanaka, Takafumi,Tanaka, Tsukushi,Yazaki, Ryo,Ohshima, Takashi
, p. 4164 - 4170 (2020/06/04)
We developed a catalytic aerobic method to synthesize α,α-disubstituted α-amino acids through cross-dehydrogenative coupling of azlactones. Combining an iron catalyst with a bisoxazolidine ligand resulted in high catalytic performance, and cross-coupling with an indole proceeded smoothly under aerobic conditions. A wide variety of α-aryl and aliphatic amino acid derived azlactones were applied to the present catalysis. In addition, a quaternary carbon could be constructed using oxindole and benzofuranone under aerobic conditions.
OXAZOLONES. PART VI. REACTION OF 5(4H)-OXAZOLONES WITH NITRILE IMINES: SYNTHESIS OF 1H-1,2,4-TRIAZOLES THROUGH CYCLOADDITION
Gelmi, Maria Luisa,Pocar, Donato,Riva, Raul
, p. 315 - 320 (2007/10/02)
5(4H)-Oxazolones (1) react as dipolarophiles in cycloadditions with nitrile imines generated from tetrazoles (2) in refluxing anisole affording two 1H-1,2,4-triazole derivatives (3) and diarylethylenes (4).