Copper-Catalyzed Annulation Cascades of Alkyne-Tethered α-Bromocarbonyls with Alkynes: An Access to Heteropolycycles
作者:Bang Liu、Jiang-Xi Yu、Yang Li、Jin-Heng Li、De-Liang He
DOI:10.1021/acs.orglett.8b00236
日期:2018.4.20
with common alkynes for the synthesis of various heteropolycycle frameworks, including 1H-benzo[de]quinolin-2(3H)-ones, 4H-dibenzo[de,g]quinolin-5(6H)-one, and benzo[de]chromen-2(3H)-one, which were constructed with high selectivity. This was achieved by two-component annulation cascades, rather than atom-transfer radical cyclization (ATRC), with alkyne-tethered α-bromocarbonyls for one-step accessing
我们在这里描述了一种新的Cu催化的,由炔烃拴在一起的α-溴羰基与常见炔烃的环合级联反应,用于合成各种杂多环骨架,包括1 H-苯并[ de ] quinolin-2(3 H)-one,4 H-二苯并以高选择性构建的[ de,g ]喹啉5(6 H)-one和苯并[ de ] chromen-2(3 H)-one。这是通过两组分环级联反应而不是原子转移自由基环化(ATRC)来实现的,炔烃系链的α-溴羰基化合物可通过C-Br键拆分,分子内环化,分子间[4 + 2]一步进入杂多环。环和芳基C(sp 2)–H功能化级联。