可见光促进的醇脱氧自由基杂芳基化是在没有任何外部光敏剂的情况下实现的。该过程是通过从醇生成黄原酸盐,然后进行 SET 和裂解,传递烷基自由基与杂芳基砜反应而发生的。该方法适用于多种醇,具有良好的官能团耐受性,为苯并杂芳烃的烷基化提供了实用的策略。机理研究表明,黄原酸阴离子的直接可见光激发和随后的 SET 引发反应。
可见光促进的醇脱氧自由基杂芳基化是在没有任何外部光敏剂的情况下实现的。该过程是通过从醇生成黄原酸盐,然后进行 SET 和裂解,传递烷基自由基与杂芳基砜反应而发生的。该方法适用于多种醇,具有良好的官能团耐受性,为苯并杂芳烃的烷基化提供了实用的策略。机理研究表明,黄原酸阴离子的直接可见光激发和随后的 SET 引发反应。
cross-coupling reactions of aryl iodides and arylsulfonylhydrazides under ligand-enabled, Au(I)/Au(III) redox catalysis. This strategy operates under mild reaction conditions, requires no prefunctionalized aryl coupling partner, and works across several aryl iodides. The utility of this protocol is highlighted through the synthesis of various medicinally relevant biaryl sulfones. The reaction mechanism is supported
Copper/Silver-Mediated Cascade Reactions for the Construction of 2-Sulfonylbenzo[<i>b</i>]furans from <i>trans</i>-2-Hydroxycinnamic Acids and Sodium Sulfinates
作者:Hong-Shuang Li、Gang Liu
DOI:10.1021/jo4024478
日期:2014.1.17
Efficient construction of 2-sulfonylbenzo[b]furans is achieved from readily available trans-2-hydroxycinnamic acids and sodium sulfinates mediated by the CuCl2 center dot 2H(2)O/AgTFA system under mild conditions. This unprecedented synthetic protocol provides expedient access to a series of products in one step via a protodecarboxylation/C-S bond formation/C-O bond formation cascade.
Aralkylaminoalkoxyphenyl derivatives, process of preparation and compositions containing the same
申请人:ELF SANOFI
公开号:EP0302793B1
公开(公告)日:1993-12-15
Catalyst-Free Electrochemical Sulfonylation of Organoboronic Acids