Skeletal reorganization divergence of N-sulfonyl ynamides.

Skeletal reorganization divergence of N-sulfonyl ynamides.
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DOI:
10.1038/s41467-020-19467-5
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发表时间:
2020-11-06
影响因子:
16.6
通讯作者:
Cui S
Cui S
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Zeng L;Lin Y;Li J;Sajiki H;Xie H;Cui S

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由于其有趣的机制、高度的原子经济性和合成的多功能性,骨骼重组是一种有趣的过程。在这里,我们描述了一种不寻常的,发散的N-磺酰氰胺的骨架重组。在用二异丙胺(LDA)处理后,N-磺酰亚胺进行骨架重组以提供硫磺,而1,3-二甲基-四氢嘧啶-2(1H)-酮(DMPU)的额外使用改变了这一过程以提供炔丙基磺胺。这种骨架重组分歧具有广泛的底物范围和可扩展性。从机理上讲,实验和计算表明,这些过程可能始于锂离子/4-外-DIG环化级联反应,随后的配体依赖的1,3-磺酰基迁移或β消除将控制化学发散。此外,该协议还提供了一种从容易获得的ynamide中访问各种特权分子的便捷途径。由于其机理、原子经济性和合成的多功能性,骨架重组是化学合成中有趣的过程。在这里,作者描述了N-磺酰基氰胺到硫代砜和炔丙基磺胺的发散骨架重组。
Skeletal reorganization is a type of intriguing processes because of their interesting mechanism, high atom-economy and synthetic versatility. Herein, we describe an unusual, divergent skeletal reorganization of N-sulfonyl ynamides. Upon treatment with lithium diisopropylamine (LDA), N-sulfonyl ynamides undergo a skeletal reorganization to deliver thiete sulfones, while the additional use of 1,3-dimethyl-tetrahydropyrimidin-2(1H)-one (DMPU) shifts the process to furnish propargyl sulfonamides. This skeletal reorganization divergence features broad substrate scope and scalability. Mechanistically, experimental and computational studies reveal that these processes may initiate from a lithiation/4-exo-dig cyclization cascade, and the following ligand-dependent 1,3-sulfonyl migration or β-elimination would control the chemodivergence. This protocol additionally provides a facile access to a variety of privileged molecules from easily accessible ynamides. Skeletal reorganizations are intriguing processes in chemical synthesis due to their mechanism, atom-economy and synthetic versatility. Herein, the authors describe a divergent skeletal reorganization of N-sulfonyl ynamides to thiete sulfones and propargyl sulfonamides.
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