Understanding Mechanistic Differences between
<scp>3‐Diazoindolin‐2‐Imines</scp>
and
<scp>
<i>N</i>
‐Sulfonyl
</scp>
‐1,2,
<scp>3‐Triazoles</scp>
in the Rh
<sub>2</sub>
(
<scp>II</scp>
)‐Catalyzed Reactions with Nitrosoarenes
作者:Rui Fu、Luyao Kou、Ke Gao、Shaofang Zhou、Xiaoguang Bao
DOI:10.1002/cjoc.202100033
日期:2021.6
nucleophilic addition of nitrosoarenes with the α-imino rhodium carbene species (I), which is derived from Rh2(II)-catalyzed denitrogenation of 3-diazoindolin-2-imines, to produce synthetically useful 2-iminoindolin-nitrones is described. Mechanistically, the N-attack of nitrosoarenes with the carbene site of I is proposed. For the analogous Rh2(II)-catalyzed reaction of nitrosoarenes with N-sulfonyl-1
使用α-亚氨基金属碳烯来构建有价值的含氮化合物引起了广泛的研究兴趣。在本文中,亚硝基芳烃与α-亚氨基铑卡宾物种(I)的亲核加成是由Rh 2(II)催化的3-重氮吲哚-2-亚胺的脱氮反应而产生的,可用于合成合成的2-亚氨基吲哚-亚硝基。描述。从机理上讲,提出了亚硝基芳烃的N-攻击,其中卡宾位为I。对于类似的Rh 2与nitrosoarenes的(II) -催化的反应Ñ磺酰基-1,2,3-三唑报道Li和同事(组织。快报。2014年,16,6394),然而,具有α-亚氨基铑卡宾物种(II)的卡宾位的亚硝基芳烃的O-攻击比N-攻击更容易发生。基于计算研究合理化了随后的转化以产生N-酰基lam啶的产物。讨论了亚硝基芳烃与α-亚氨基铑卡宾物种I和II反应的机理差异。