Progress of Ferrocene-Based Metal Cation Recognition Receptor

Liu, Yuting; Li, Jie; Yin, Daqiang

doi:10.6023/cjoc202005042

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2023

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“…Ferrocene plays an important role and is recognized as the core scaffold of organocatalysts and chiral ligands, especially in the field of asymmetric synthesis. Due to its unique sandwich structure and electronic properties, the introduction of ferrocene into functional molecules is an attractive approach for improving the properties of these molecules [ 45 , 46 , 47 , 48 , 49 , 50 ]. Combination of two functional molecules is also a common strategy in the construction of novel dominant skeletons.…”

Section: Introductionmentioning

confidence: 99%

Construction of N-Ferrocene Substituted Benzodihydrooxazoles via a Catalyst-Free Aza-Michael Addition/C(sp3)-O Bond Formation Tandem Reaction

et al. 2023

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A catalyst-free aza-Michael addition/C(sp3)-O bond formation tandem reaction of substituted amino ferrocenes with quinone esters was developed, which provided a green and efficient strategy for the construction of a C(sp3)-O bond from C(sp3)-H, and a series of N-ferrocene-substituted benzodihydrooxazoles were smoothly produced in moderate to excellent yields (up to >99% yield). The mechanism experiments showed that quinone esters performed as both substrate and oxidant. The salient features of this transformation include good functional group tolerance, broad substrate scope and mild conditions.

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