N-methylation and N-oxidation of the less reactive nitrogen atom of a 2,3′-bipyridine. Two general methods for polyazines
摘要:
5-Carbamoyl-2,3'-bipyridine model compound was N-methylated or N-oxidized at the less reactive 2-pyridyl ring for the first time. Two different schemes were developed.
moiety followed by β-C elimination strategy was less studied. Here a palladium-catalyzed C–C bond activation of an unstrained ketone enabled by a removable directing group through β-C elimination to synthesize 2-arylpyridine is described. The protocol features wide substrate scope with yields up to 95%, good functional group tolerance, and functionality of natural products. The 2-arylpyridine N-oxide
Studies on Organometallic Compounds. IX. Synthesis of Bipyride N-Oxides and Terpyridines by Palladium Catalyzed Cross-Coupling Reaction of Trimethylstannylpyridines with Bromopyridines
Reaction of trimethylstannylpyridines with bromopyridines in the presence of Pd(PPh(3))(4) directed toward a practical use was accomplished, giving all nine pyridinylpyridine N-oxides in satisfactory yields. Similarly, nicotelline and 2,2':6',2 ''-terpyridine were produced in good yields.
KURBATOV, YU. V.;ABDULLAEV, SH. V.;TSUKERVANIK, V. S.;BAZHENOVA, N. S., FIZ.-XIM. ISSLED. SINTETICH. I PRIROD. SOEDIN., SAMARKAND, 1983, 12-16
作者:KURBATOV, YU. V.、ABDULLAEV, SH. V.、TSUKERVANIK, V. S.、BAZHENOVA, N. S.
DOI:——
日期:——
N-methylation and N-oxidation of the less reactive nitrogen atom of a 2,3′-bipyridine. Two general methods for polyazines
作者:John A. Zoltewicz、Michael P. Cruskie
DOI:10.1016/0040-4020(95)00074-i
日期:1995.3
5-Carbamoyl-2,3'-bipyridine model compound was N-methylated or N-oxidized at the less reactive 2-pyridyl ring for the first time. Two different schemes were developed.