Aluminum‐Mediated C6‐Selective C−H Alkylation of 2‐Carbamoylbenzofuran by Nickel Catalysis
Aluminum‐Mediated C6‐Selective C−H Alkylation of 2‐Carbamoylbenzofuran by Nickel Catalysis
复制标题
镍催化铝介导 2-氨基甲酰基苯并呋喃的 C6 选择性 C−H 烷基化
DOI:
10.1002/ajoc.201800208
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发表时间:
2018
影响因子:
2.7
通讯作者:
Y. Nakao
中科院分区:
文献类型:
--
作者:
S. Okumura;Y. Nakao
Benzofuran is a key structural motif due to its bioactivity and frequent occurrence in nature. Although C−H functionalization can be one of the most efficient methods to synthesize poly‐substituted benzofurans, C6‐selective C−H functionalization has been undeveloped so far. Herein we report aluminum‐mediated C6‐selective linear alkylation of 2‐carbamoylbenzofurans with 1‐alkenes by nickel/N‐heterocyclic carbene catalysis. In the presence of a bulky aluminum additive [(2,6‐tBu2‐4‐Me‐C6H2O)2AlMe] (MAD),N,N‐diisobutylbenzofuran‐2‐carboxamide undergoes the C6‐selective linear alkylation reaction. Different terminal alkenes can afford the corresponding C6‐alkylation products in moderate to high yields. The site‐selectivity can be understood in terms of both steric and electronic factors.
影响因子:
5.2
作者:
Dwight, Timothy A.;Rue, Nicholas R.;DeBoef, Brenton
通讯作者:
DeBoef, Brenton
影响因子:
15
作者:
Paul, Sulagna;Chotana, Ghayoor A.;Smith, Milton R., III
通讯作者:
Smith, Milton R., III
影响因子:
16.6
作者:
Lu, Biao;Falck, John R.
通讯作者:
Falck, John R.