To expand the toolbox for the synthesis of ortho-phenolic sulfilimines, sigmatropic rearrangements were introduced to the field of sulfiliminechemistry. Herein we report a N-H sulfenylation/[2,3]-sigmatropic rearrangement cascade reaction. This mild reaction enables commercially available thiols to serve as the sulfenylation reagent and generates water as the sole byproduct. Moreover, the reaction
Rhodium(<scp>iii</scp>)-catalyzed C–H activation/[4+3] annulation of N-phenoxyacetamides and α,β-unsaturated aldehydes: an efficient route to 1,2-oxazepines at room temperature
High‐valent cyclopentadienyl cobalt catalysis is a versatile tool for sustainable C−H bond functionalizations. To harness the full potential of this strategy, control of the stereoselectivity of these processes is necessary. Herein, we report highly enantioselective intermolecular carboaminations of alkenes through C−H activation of N‐phenoxyamides catalyzed by CoIII‐complexes equipped with chiral
高价的环戊二烯基钴催化是实现可持续CH键功能化的通用工具。为了充分利用这种策略的潜力,必须控制这些过程的立体选择性。在本文中,我们报道了通过配备有手性环戊二烯基(Cp x)配体的Co III络合物催化的N苯氧酰胺的C H活化,对烯烃进行高度对映选择性的分子间碳胺化反应。该方法可在非常温和的条件下将广泛使用的丙烯酸酯以及双环烯烃转化为有吸引力的对映体富集的异酪氨酸衍生物,以及经过精制的氨基取代的双环支架。概述的反应性是Cp x Co III特有的 与4d和5d贵金属催化剂的反应性互补。
Rhodium(<scp>iii</scp>)-catalysed cascade [3 + 2] annulation of<i>N</i>-aryloxyacetamides with 3-(hetero)arylpropiolic acids: synthesis of benzofuran-2(3<i>H</i>)-ones
Herein, a cascade [3 + 2] annulation of N-aryloxyacetamides with 3-(hetero)arylpropiolic acids affording benzofuran-2(3H)-ones via rhodium(iii)-catalyzed redox-neutral C-H functionalization/isomerization/lactonization using an internal oxidative directing group O-NHAc was achieved. This catalytic system provides a regio- and stereoselective approach to synthesize (Z)-3-(amino(aryl)methylene)benzofuran-2(3H)-ones
Dual Directing-Groups-Assisted Redox-Neutral Annulation and Ring Opening of <i>N</i>-Aryloxyacetamides with 1-Alkynylcyclobutanols via Rhodium(III)-Catalyzed C–H/C–C Activations
A cascade [3 + 2] annulation and ringopening of N-aryloxyacetamides with 1-alkynylcyclobutanols via Rh(III)-catalyzed redox-neutral C–H/C–C activations using internal oxidative O–NHAc and −OH as the dual directing groups has been achieved. This reaction provided an efficient and regioselective approach to benzofuran derivatives with good functional group compatibility and high yields.