3-nitro-4-bromopyridine derivative coupled in good yield with TBAT (tetrabutylammonium triphenyldifluorosilicate) to provide a biaryl adduct that serves as a model system for the total synthesis of the antitumor antibiotics streptonigrin and lavendamycin. [reaction: see text]
制备了高度官能化的4-
溴吡啶,并发现它们与芳基三烷
氧基
硅烷发生了
氟化物促进的,Pd催化的交叉偶联,从而产生了空间上要求的联芳基。
3-硝基-4-
溴吡啶衍生物以高收率与T
BAT(四丁基三
苯基二
氟硅酸铵)偶联,形成联芳基加合物,可作为抗肿瘤
抗生素链霉菌素和拉文霉素的总合成的模型系统。[反应:看文字]