由取代的2-碘苯胺的Boc酰胺和烷基乙烯基酮分三步合成取代的喹啉。该方法包括:(1)在MeCN中在Cs 2 CO 3存在下,将2-碘苯胺的Boc酰胺N-迈克尔加成到烷基乙烯基酮上;(2)将加合物与3.5当量的i- PrMgCl·LiCl进行I-Mg交换,以及(3)所得醇的酸催化反应(EtOH中过量的AcCl)。给出了六个具有高收率的示例。
A Metal-Free Approach for Brønsted Acid Promoted C–H Alkylation of Heteroarenes with Alkyl Peroxides
作者:Bo Qian、Hongli Bao、Yuehua Zeng、Yajun Li
DOI:10.1055/s-0037-1609965
日期:2018.8
for Minisci C–H alkylation of heteroarenes using alkyl peroxides as the alkylating reagents and internal oxidants simultaneously under promotion of Brønsted acid has been demonstrated. A series of alkyl substituted heteroarenes were readily prepared by the C–H alkylation in moderate to good yields. A possible pathway involving the addition of alkyl radical to heterocycle followed by rearomatization
Substituted quinolines were synthesized in three steps from the Boc amides of substituted 2-iodoanilines and alkyl vinyl ketones. This method consists of (1) N-Michael addition of the Boc amide of 2-iodoaniline to alkyl vinyl ketone in the presence of Cs2CO3 in MeCN; (2) I–Mg exchange of the adduct with 3.5 equiv of i-PrMgCl·LiCl, and (3) acid-catalyzed reaction (excess AcCl in EtOH) of the resulting
由取代的2-碘苯胺的Boc酰胺和烷基乙烯基酮分三步合成取代的喹啉。该方法包括:(1)在MeCN中在Cs 2 CO 3存在下,将2-碘苯胺的Boc酰胺N-迈克尔加成到烷基乙烯基酮上;(2)将加合物与3.5当量的i- PrMgCl·LiCl进行I-Mg交换,以及(3)所得醇的酸催化反应(EtOH中过量的AcCl)。给出了六个具有高收率的示例。