Metal‐Free Ring Opening Cyclization of Cyclopropane Carbaldehydes and
<i>N</i>
‐Benzyl Anilines: An Eco‐Friendly Access to Functionalized Benzo[
<i>b</i>
]azepine Derivatives
作者:Raghunath Dey、Prabal Banerjee
DOI:10.1002/adsc.201801714
日期:2019.6.18
Herein, we report a p‐toluenesulfonic acid (PTSA) initiated mild and user‐friendly ring opening/domino ring opening cyclization reaction (depends on substituent present in N‐benzyl aniline) of cyclopropane carbaldehyde and N‐benzyl aniline towards the formation of substituted 4‐amino butanal/2,3‐dihydro‐1H‐benzo[b]azepine. The product dihydro‐1H‐benzo[b]azepine was also converted into the corresponding
在此,我们报道了对丙烷磺酸和环丙烷苯甲醛与N-苄基苯胺的对甲苯磺酸(PTSA)引发的温和且用户友好的开环/多米诺环开环反应(取决于N-苄基苯胺中存在的取代基) 4-氨基丁醛/ 2,3-二氢-1 H-苯并[ b ]氮杂。产物二氢-1 H-苯并[ b ]氮杂也被转化为相应的四氢-1 H-苯并[ b ]氮杂。