Enhancing Reactivity and Selectivity of Aryl Bromides: A Complementary Approach to Dibenzo[
<i>b,f</i>
]azepine Derivatives
作者:Alessandra Casnati、Marco Fontana、Giovanni Coruzzi、Brunella Maria Aresta、Nicola Corriero、Raimondo Maggi、Giovanni Maestri、Elena Motti、Nicola Della Ca'
DOI:10.1002/cctc.201800940
日期:2018.10.9
Dihydrodibenzo[b,f]azepines and dibenzo[b,f]azepines can be efficiently synthesized from aryl bromides, o‐bromoanilines and norbornene or norbornadiene by means of palladium catalysis. This protocol gives access to dibenzo[b,f]azepine core containing a variety of electron‐withdrawing substituents on both aromatic rings and complements the previously reported methodology where electron rich aryl iodides
二氢二苯并[ b,f ]氮杂和二苯并[ b,f ]氮杂可以通过钯催化从芳基溴化物,邻溴代苯胺和降冰片烯或降冰片二烯有效合成。该协议可以访问二苯并[ b,f]氮杂core核在两个芳环上均包含多个吸电子取代基,并补充了先前报道的方法,在该方法中优先使用富含电子的芳基碘化物。KI的存在,即使是低于化学计量的量,对于该三组分反应也至关重要。适当添加碘化物阴离子对反应速率和选择性具有显着影响。的三环类抗抑郁药氯米帕明(安那芬尼正式三步合成®)也被描述。