Development of a Cross‐Conjugated Vinylogous [4+2] Anionic Annulation and Application to the Total Synthesis of Natural Antibiotic (±)‐ABX
作者:Jing‐Kai Huang、Kak‐Shan Shia
DOI:10.1002/anie.201914657
日期:2020.4.16
vinylogous [4+2] anionic annulation has been newly developed, the cascade process of which has a high preference for regiochemical control and chemoselectivity, giving rise to exclusively Michael-type adducts in moderate to high yields (up to 94 %, 35 examples). By making use of this approach as a key operation, the first total synthesis of natural antibiotic ABX, in racemic form, has been successfully
General Silver-Catalyzed Hydroazidation of Terminal Alkynes by Combining TMS-N<sub>3</sub> and H<sub>2</sub>O: Synthesis of Vinyl Azides
作者:Zhenhua Liu、Peiqiu Liao、Xihe Bi
DOI:10.1021/ol501661k
日期:2014.7.18
A general hydroazidation of unactivated alkynes using silver catalysis is reported. The reactions of diverse terminal alkynes with trimethylsilyl azide (TMS-N3) in the presence of H2O afforded the corresponding vinyl azides in good to excellent yields. This reaction has a broad substrate scope, good functional group tolerance, simple operation, and high reaction efficiency, thus providing an easy access
An alkaline-resistant Ag(<scp>i</scp>)-anchored pyrazolate-based metal–organic framework for chemical fixation of CO<sub>2</sub>
作者:Huimin Yang、Xu Zhang、Guiyang Zhang、Honghan Fei
DOI:10.1039/c8cc01461b
日期:——
An alkaline-resistant Ag(i)-anchored metal–organic framework has been achieved via postsynthetic modification of pyrazolate-based linkers.
一种耐碱性的Ag(i)锚定金属有机框架已经通过对基于吡唑酮的连接剂进行后合成修饰而实现。
Synthesis of Oxazolidinones by Efficient Fixation of Atmospheric CO<sub>2</sub>with Propargylic Amines by using a Silver/1,8-Diazabicyclo[5.4.0]undec-7-ene (DBU) Dual-Catalyst System
This'll fix it: Efficientfixation of atmospheric CO2 has been achieved by the reaction of propargylicamines with a silver/DBU dual‐catalyst system (see scheme). Various oxazolidinones were synthesized in moderate to good yields by using substituted propargylicamines.
Copper/DTBP-Promoted Oxyselenation of Propargylic Amines with Diselenides and CO<sub>2</sub>: Synthesis of Selenyl 2-Oxazolidinones
作者:Jia-Min Chen、Lin Qi、Linlin Zhang、Li-Jun Li、Cong-Ying Hou、Wei Li、Li-Jing Wang
DOI:10.1021/acs.joc.0c01519
日期:2020.8.21
A highly efficient electrophilic oxyselenation of propargylic amines with diselenides and CO2 under atmospheric pressure promoted by copper/DTBP is reported. Various biologically important selenyl 2-oxazolidinones were produced in moderate to excellent yields. The developed method features a broad substrate scope, easy scalability, and mild reaction conditions.