Alkylative Dearomatization by Using an Unactivated Aryl Nitro Group as a Leaving Group: Access to Diversified Alkylated Spiro[5.5]trienones
作者:Dong Xia、Xin-Fang Duan
DOI:10.1021/acs.orglett.1c00469
日期:2021.4.2
cleavage of an unactivated aryl nitro group triggered by alkyl radicals enables a dearomative cyclization, affording diversified alkylated spiro[5.5]trienones in good yields. Using readily available compounds (toluene and analogues, alkanes, ethers, ketones, etc.) as alkylating reagents, various alkyls have been implanted into the spirocycles via C(sp3)–H and Ar–NO2 bond activation with high functional
由烷基引发的未活化芳基硝基的裂解可实现脱芳香环化,从而以高收率提供多样化的烷基化螺[5.5]三烯酮。使用现成的化合物(甲苯和类似物,烷烃,醚,酮等)作为烷基化试剂,各种烷基已通过C(sp 3)–H和Ar–NO 2键活化到螺环中,并具有较高的官能团耐受性。该协议为激活芳基硝基提供了一种独特的方法。