Benzothiazole Sulfinate: A Sulfinic Acid Transfer Reagent under Oxidation-Free Conditions
作者:Jacob J. Day、Deshka L. Neill、Shi Xu、Ming Xian
DOI:10.1021/acs.orglett.7b01693
日期:2017.7.21
commonly encountered intermediates found in natural product synthesis and medicinal chemistry. However, because of high reactivity, instability, and harsh reaction conditions, they are difficult to synthesize. Herein we have developed an oxidation-free method to produce sulfinic acids and sulfinate salts using 2-sulfinyl benzothiazole (BTS). We have also demonstrated the synthetic usefulness by developing
Visible-light-induced Smiles rearrangement without release of SO<sub>2</sub>: rapid access to alkyl sulfonyl derivatives
作者:Yunpeng Cao、Xinmou Wang、Haoran Jiao、Hongjian Song、Yuxiu Liu、Qingmin Wang
DOI:10.1039/d2gc01509a
日期:——
Conventional visible-light-induced Smiles rearrangements generate C, N, or O radicals and release SO2. Herein, we describe a perfectly atom-economical protocol for Smiles rearrangements without release of SO2. The protocol not only afforded alkyl sulfinic acid salts via photocatalyzed radical addition, arylmigration, and sulfone radical reduction but also permitted efficient functionalization of butenyl
常规可见光诱导的微笑重排产生 C、N 或 O 自由基并释放 SO 2。在这里,我们描述了一个完美的原子经济协议,用于微笑重排而不释放 SO 2。该协议不仅通过光催化自由基加成、芳基迁移和砜自由基还原提供了烷基亚磺酸盐,而且还允许在温和条件下对丁烯基杂芳基砜衍生物进行有效功能化。
Overcoming Radical Stability Order via DABCO-Triggered Desulfurization: Visible-Light-Promoted 1,2,4-Trifunctionalization of Butenyl Benzothiazole Sulfone with Thiosulfonate
作者:Xin-Yu Liu、Jia-Lin Fang、Weidong Rao、Daopeng Shen、Zhao-Ying Yang、Shun-Yi Wang
DOI:10.1021/acs.joc.3c02234
日期:2024.1.5
A radical 1,2,4-trifunctional reaction of thiosulfonate to unactivated olefin is achieved by a migration strategy under mild conditions. In this reaction, the more unstable primary free radicals are in situ generated after the migration of heteroaryl groups in the presence of DABCO. This trifunctionalization of unactivated olefins involves two C–S bond formations and one C–C bond formation.