在1,2-Thio/Seleno-Heteroarylation中的电化学驱动的基醇的直接参与
Siyu Wang1, Shihao Zhi2, Tingting Cai1
1State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Key Laboratory of Medicinal for Natural Resource, Ministry of Education and Yunnan Province, School of Pharmacy, School of Chemical Science and Technology, Yunnan University, Kunming 650091, China.
这项研究引入了一种电化学方法,用于直接合石化烯,烯和N-烯,以形成β-azaaryl石化. 这种方法有效地激活了没有金属催化剂的S-H/Se-H债券,为C-S/Se债券形成提供了可持续的途径.
科学领域:
- 有机化学 有机化学
- 电化学 电化学 电化学
- 合成方法论 合成方法论
背景情况:
- 形成C-S和C-Se键对于合成具有生物学意义的分子至关重要.
- 激活S-H/Se-H键的传统方法通常需要恶劣的条件或金属催化剂.
- 电化学方法为有机合成提供了一个可持续的替代方案.
研究的目的:
- 开发一种电化学驱动的三组分反应,用于合成β-azaaryl chalcogenoethers.
- 为了使非预先激活的素与 styrenes 和 N-heteroarenes 的直接合.
- 为电化学激活S-H/Se-H键建立一个新的范式.
主要方法:
- 阳极氧化介导的脱质-氧化路径.
- 三组件合反应涉及基醇,烯和N-甲.
- 电化学合成利用阴极演变来驱动反应平衡.
主要成果:
- 多种基质的成功直接合,产生β-azaaryl chalcogenoethers.
- 通过基质中间体绕过高的S-H/Se-H键解离能.
- 高原子经济,仅用气作为副产品;优秀的功能组耐受性.
结论:
- 开发了一种无金属,无氧化剂的电化学策略,用于形成C-S/Se键.
- 证明了一种有效和可逆的方法来构建β-azaaryl chalcogenoethers.
- 建立了一种用于电化学激活S-H/Se-H键的新方法.
相关概念视频
Preparation and Reactions of Sulfides
Electrophilic Addition to Alkynes: Hydrohalogenation
Reduction of Alkenes: Asymmetric Catalytic Hydrogenation
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
Electrophilic Addition to Alkynes: Halogenation
Halogenation is another class of electrophilic addition reactions where a halogen molecule gets added across a π bond. In alkynes, the presence of two π bonds allows for the addition of two equivalents of halogens (bromine or chlorine). The addition of the first halogen molecule forms a trans-dihaloalkene as the major product and the cis isomer as the minor product. Subsequent addition of the second equivalent yields the tetrahalide.
Electrophilic Aromatic Substitution: Chlorination and Bromination of Benzene
Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide


