A Mild, General,
<scp>Metal‐Free</scp>
Method for Desulfurization of Thiols and Disulfides Induced by
<scp>Visible‐Light</scp>
作者:Wenting Qiu、Shuai Shi、Ruining Li、Xianfeng Lin、Liangming Rao、Zhankui Sun
DOI:10.1002/cjoc.202000607
日期:2021.5
A visible‐light‐induced metal‐free desulfurization method for thiols and disulfides has been explored. This radical desulfurization features mild conditions, robustness, and excellent functionality compatibility. It was successfully applied not only to the desulfurization of small molecules, but also to peptides.
A convergent process to C-2 substituted peneme via addition of thiols and organocuprates to an O-triflylthioketene acetal
作者:Douglas Phillips、Brian T O'Neill
DOI:10.1016/s0040-4039(00)89046-2
日期:1990.1
The synthesis of fully protected penem derivatives has been achieved by addition of thiols and both higher and lower order cuprates to a novel 2-O-trifylpenem.
Gold(I)-Mediated Hydrothiolation of Conjugated Olefins
作者:Chuan He、Chad Brouwer、Ronald Rahaman
DOI:10.1055/s-2007-984519
日期:2007.7
Thiol additions to conjugated olefins were catalyzed by Ph 3 PAuBF 4 with excellent yields at room temperature. A variety of functionalized thiols, with both electron-donating and electron-withdrawing substituents, are compatible with this system. Hydrothiolations of 1,3-cyclohexadiene were also achieved in similar yields at 50 °C.
Ph 3 PAuBF 4 催化硫醇加成到共轭烯烃,在室温下产率极好。各种具有给电子和吸电子取代基的官能化硫醇都与该系统兼容。1,3-环己二烯的氢硫醇化也在 50 °C 下以相似的产率实现。
total synthesis of echinomycin (1) was accomplished by featuring the late-stage construction of the thioacetal moiety via Pummerer rearrangement and simultaneous cyclization, as well as two-directional elongation of the peptide chains to construct a C2-symmetrical bicyclic octadecadepsipeptide bridged with a sulfide linkage. This strategy can be applicable to a variety of echinomycin analogues.