SRN1 studies. 26. SRN1-based methodology for synthesis of naphthylquinolines and naphthylisoquinolines
摘要:
A versatile S(RN)1 methodology allows straightforward access to title compounds via two strategies: (A) cross-coupling reactions of halobenzopyridine derivatives with anions from 2-naphthol or conversely of iodonaphthalene with anions from hydroxyquinoline and (B) total synthesis from either acetylchloropyridines in which the acetyl and chloro groups are ortho to each other or o-bromobenzamide treated with anions from acetonaphthone.
Isoquinolone Synthesis through S<sub>N</sub>Ar Reaction of 2-Halobenzonitriles with Ketones Followed by Cyclization
作者:Muhammad Shareef Mayo、Xiaoqiang Yu、Xiujuan Feng、Yoshinori Yamamoto、Ming Bao
DOI:10.1021/acs.joc.5b00357
日期:2015.4.17
An efficient method for the synthesis of isoquinolones through base KOtBu-promoted SNAr reaction of 2-halobenzonitriles with ketones followed by Lewis acid Cu(OAc)2-catalyzed cyclization is described. Isoquinolone derivatives were obtained in satisfactory to good yields.
描述了一种有效的方法,该方法通过2-卤代苄腈与酮的碱式KO t Bu促进的S N Ar反应,然后由路易斯酸Cu(OAc)2催化的环化来合成异喹诺酮。以令人满意的至良好的产率获得了异喹诺酮衍生物。
Redox‐Neutral Manganese(I)‐Catalyzed C−H Activation: Traceless Directing Group Enabled Regioselective Annulation
作者:Qingquan Lu、Steffen Greßies、Sara Cembellín、Felix J. R. Klauck、Constantin G. Daniliuc、Frank Glorius
DOI:10.1002/anie.201707396
日期:2017.10.2
groups (TDGs) are used to promote the redox‐neutral MnI‐catalyzed regioselectivesynthesis of N‐heterocycles. Alkyne coupling partners bearing a traceless directing group, which serves as both the chelator and internal oxidant, were used to control the regioselectivity of the annulation reactions. This operationally simple approach is highly effective with previously challenging unsymmetrical alkyne