作者:Somsak Ruchirawat、Nopporn Thasana
DOI:10.1055/s-2003-39313
日期:——
The application of directed remote metalation (DreM) and electrophilic substitution is reported for the synthesis of wrightiadione using N,N-diethylcarboxamide as a directed metalation group (DMG) and electrophilic group. The lithiation of N,N-diethylisoflavone-2′-carboxamide with LDA gave a carbanion at C-2 which further cyclized to wrightiadione.
报道了采用N,N-二乙基羧酰胺作为导向金属化基团(DMG)和亲电基团,通过定向远程金属化(DreM)和亲电取代反应合成wrightiadione。N,N-二乙基异黄酮-2′-羧酰胺与LDA进行锂化反应,在C-2位生成碳负离子并进一步环化形成wrightiadione。