Synthesis of Highly Functionalized Angular Azaphenoxazines and Related Benzo Analogues via Suzuki-Miyaura Cross-Coupling Reaction
作者:U.C. Okoro、M.A. Ezeokonkwo、E.A. Ujah、R.N. Nweloke
DOI:10.14233/ajchem.2016.19299
日期:——
Highly functionalized angular azaphenoxazines and the benzo analogues have been prepared following the Suzuki-Miyaura protocol, which consists in the palladium catalyzed coupling of 11-amino-6-chloro-8,10-diazabenzo[a]phenoxazin-5-one, 6-chloro-11-azabenzo[a]phenoxazin-5-one, 6-chlorobenzo[a]phenoxazin-5-one and 6-chlorodibenzo[a,j]phenoxazin-5-one respectively with various boronic acids at 110 °C in DMF-toluene. The corresponding products were obtained in trace to excellent yields in the presence of piperazine ligand and K2CO3 as base. The structures of the newly synthesized compounds were established by spectral analysis.
高功能化角氮杂吩噁嗪和苯并类似物的制备采用了 Suzukii-Miyaura 方案,该方案包括在钯催化下偶联 11-amino-6-chloro-8、10-二氮杂苯并[a]吩恶嗪-5-酮、6-氯-11-氮杂苯并[a]吩恶嗪-5-酮、6-氯苯并[a]吩恶嗪-5-酮和 6-氯二苯并[a,j]吩恶嗪-5-酮分别与各种硼酸在 110 °C、DMF-甲苯中催化偶联。在哌嗪配体和 K2CO3 作为碱的存在下,相应的产物以微量到极高的产率获得。通过光谱分析确定了新合成化合物的结构。