Consecutive and Selective Double Methylene Insertion of Lithium Carbenoids to Isothiocyanates: A Direct Assembly of Four‐Membered Sulfur‐Containing Cycles
作者:Raffaele Senatore、Monika Malik、Thierry Langer、Wolfgang Holzer、Vittorio Pace
DOI:10.1002/anie.202110641
日期:2021.11.15
A formal CH2 -CH2 homologation conducted with C1 carbenoids on a carbon electrophile for the obtainment of a four-membered cycle is reported. The logic proposes the consecutive delivery of two single nucleophilic CH2 units to an isothiocyanate-as competent electrophilic partner-resulting in the assembling of a rare imino-thietane cluster. The single synthetic operation procedure documents genuine chemocontrol
据报道,在碳亲电子试剂上用 C1 类胡萝卜素进行正式的 CH2 -CH2 同系化以获得四元环。该逻辑提出将两个单一亲核 CH2 单元连续传递至异硫氰酸酯(作为有效的亲电伴侣),从而组装出罕见的亚氨基硫杂环丁烷簇。单一合成操作程序记录了真正的化学控制,如对装饰起始材料的各种反应元素的耐受性所示。值得注意的是,双重同源协议是直接在碳亲电子试剂上完成的,因此不需要安装以杂原子为中心的歧管(例如硼)。