An acid-promoted novel skeletal rearrangement is described. Using trifluoroacetic acid as the acid promoter, an intramolecular ipso-Friedel-Crafts-type addition of phenols to 3-alkylidene indolenium cations, formation of iminium cations through rearomatization of the spirocyclohexadienone units, and intramolecular Pictet-Spengler reaction proceeded sequentially, producing tricyclic indole derivatives
Compounds disclosed herein including compounds of Formula I:
and salts thereof are provided. Pharmaceutical compositions comprising compounds disclosed herein, processes for preparing compounds disclosed herein, intermediates useful for preparing compounds disclosed herein and therapeutic methods for treating an HIV infection using compounds disclosed herein are also provided.
Domino C–H functionalization reactions of gem-dibromoolefins: synthesis of N-fused benzo[c]carbazoles
作者:Richard Y. Huang、Patrick T. Franke、Norman Nicolaus、Mark Lautens
DOI:10.1016/j.tet.2013.01.001
日期:2013.6
A palladium-catalyzed domino transformation of gem-dibromoolefins leading to novel polycyclic benzo[c]carbazoles is described. A unique feature of the current reaction is the participation of both bromides in C–H functionalization processes. Mechanistic studies were conducted to ascertain the sequence of reaction events, and the results indicate that the (Z)-bromide likely reacts in preference to the
描述了钯-催化的宝石-二溴烯烃的多米诺转化,其导致了新型的多环苯并[ c ]咔唑。当前反应的一个独特特征是两种溴化物都参与了CH的H官能化过程。进行了机理研究以确定反应事件的顺序,结果表明(Z)-溴化物可能优先于(E)-溴化物反应。
PhI(OAc)<sub>2</sub>/NaX-mediated halogenation providing access to valuable synthons 3-haloindole derivatives
diacetate mediated method for selective chlorination, bromination, and iodination of indole C–H bonds using sodium halide as a source for analogous halogenations. The combination of NaX and phenyliodine diacetate provides an invincible system for halogenation of indoles. This protocol was compatible with a wide array of indole substrates and provides straight forward access to potential halogenated arenes
A Strategy for Synthesizing Axially Chiral Naphthyl‐Indoles: Catalytic Asymmetric Addition Reactions of Racemic Substrates
作者:Fei Jiang、Ke‐Wei Chen、Ping Wu、Yu‐Chen Zhang、Yinchun Jiao、Feng Shi
DOI:10.1002/anie.201908279
日期:2019.10.14
A newstrategy for enantioselective synthesis of axially chiral naphthyl-indoles has been established through catalytic asymmetric addition reactions of racemic naphthyl-indoles with bulky electrophiles. Under chiral phosphoric acid catalysis, azodicarboxylates and o-hydroxybenzyl alcohols served as bulky but reactive electrophiles that were attacked by C2-unsubstituted naphthyl-indoles, which underwent