Recommanded Product: 89466-08-0In 2021 ,《Facile Synthesis of Tetraarylpyrazines by Sequential Cross-coupling Approach》 was published in Chemistry Letters. The article was written by Nishiyama, Yoshitake; Akiyama, Kei; Sakata, Yuki; Hosoya, Takamitsu; Yoshida, Suguru. The article contains the following contents:
A facile synthetic method for unsym. tetraarylpyrazines I (R = 4-CH3C6H4, 2-naphthyl; R1 = 4-CF3C6H4, 4-(OTBS)C6H4, 4-NCC6H4; R2 = C6H5, 4-CH3OC6H4; R3 = 4-FC6H4, 4-N(CH3)2C6H4, 2-OHC6H4, 4-F3CC6H4, 4-N(C6H5)2C6H4) by sequential cross-couplings is disclosed. This 5-step synthesis was achieved from 2-amino-3,5-dibromo-6-chloropyrazine through four-fold cross-coupling and diazotization. Dibenzo-fused quinoxaline like 2-(4-methoxyphenyl)-7-methyl-3-(4-(trifluoromethyl)phenyl)dibenzo[f,h]quinoxaline synthesis was also accomplished by further intramol. coupling.2-Hydroxyphenylboronic acid(cas: 89466-08-0Recommanded Product: 89466-08-0) was used in this study.
2-Hydroxyphenylboronic acid(cas: 89466-08-0) belongs to acyl phenylboronic acid. Phenylboronic acid (PBA), a synthetic molecule applied in RNA affinity chromatography, is able to form reversible covalent ester bonds with 1,2- or 1,3-cis-doils on the ribose ringRecommanded Product: 89466-08-0
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