已经设计了一锅顺序的对羟基苄基化/氧化脱芳香化/螺环化以有效地构建含有螺环-环己二酮的四氢呋喃。这通过在反应进行p的1,3-二酮与-hydroxybenzylation p羟基苄基醇通过醌甲基化物的形成,随后氧化脱芳构化/ spiroannulation与合适的醇。螺[4.5]环己二酮与吲哚的弗里德尔-克来夫茨烷基化反应提供了一系列高度非对映选择性的C-3烷基化螺环和环庚[ b ]吲哚,具体取决于稠合环酮的环大小。
已经设计了一锅顺序的对羟基苄基化/氧化脱芳香化/螺环化以有效地构建含有螺环-环己二酮的四氢呋喃。这通过在反应进行p的1,3-二酮与-hydroxybenzylation p羟基苄基醇通过醌甲基化物的形成,随后氧化脱芳构化/ spiroannulation与合适的醇。螺[4.5]环己二酮与吲哚的弗里德尔-克来夫茨烷基化反应提供了一系列高度非对映选择性的C-3烷基化螺环和环庚[ b ]吲哚,具体取决于稠合环酮的环大小。
Direct amino acid-catalyzed cascade biomimetic reductive alkylations: application to the asymmetric synthesis of Hajos–Parrish ketone analogues
作者:Dhevalapally B. Ramachary、Mamillapalli Kishor
DOI:10.1039/b807999d
日期:——
and enantioselective process for the double cascade synthesis of highly substituted 2-alkyl-cyclopentane-1,3-diones, 2-alkyl-3-methoxy-cyclopent-2-enones and Hajos-Parrish (H-P) ketone analogs is presented via reductive alkylation chemistry. For the first time, we have developed a single-step alkylation of cyclopentane-1,3-dione with aldehydes/ketones and a Hantzsch ester through an organocatalytic reductive
Design, synthesis and application of spiro[4.5]cyclohexadienones <i>via</i> one-pot sequential <i>p</i>-hydroxybenzylation/oxidative dearomatization
作者:Vaibhav B. Patil、Jagadeesh Babu Nanubolu、Rambabu Chegondi
DOI:10.1039/d1cc01752g
日期:——
p-hydroxybenzylation of 1,3-diketones with p-hydroxybenzyl alcohol via quinone methide formation followed by oxidative dearomatization/spiroannulation with suitable alcohols. The Friedel–Crafts alkylation of spiro[4.5]cyclohexadienones with indoles provided a broad array of highly diastereoselective C-3 alkylated spirocycles and cyclohepta[b]indoles depending upon the ring size of the fused cyclic ketones.
已经设计了一锅顺序的对羟基苄基化/氧化脱芳香化/螺环化以有效地构建含有螺环-环己二酮的四氢呋喃。这通过在反应进行p的1,3-二酮与-hydroxybenzylation p羟基苄基醇通过醌甲基化物的形成,随后氧化脱芳构化/ spiroannulation与合适的醇。螺[4.5]环己二酮与吲哚的弗里德尔-克来夫茨烷基化反应提供了一系列高度非对映选择性的C-3烷基化螺环和环庚[ b ]吲哚,具体取决于稠合环酮的环大小。