Strategy for Overcoming Full Reversibility of Intermolecular Radical Addition to Aldehydes: Tandem C–H and C–O Bonds Cleaving Cyclization of (Phenoxymethyl)arenes with Carbonyls to Benzofurans
作者:Hong-Xing Zheng、Xiang-Huan Shan、Jian-Ping Qu、Yan-Biao Kang
DOI:10.1021/acs.orglett.8b01207
日期:2018.6.1
An intermolecular addition of carbon radicals enabled by a cascade radical coupling strategy is developed. It includes an intermolecular alkyl radical addition to a carbonyl group followed by an intramolecular alkoxy radical addition to haloarenes and produces substituted benzofurans in high yields. The radical nature of this reaction is explored by radical trapping experiments and EPR analysis. The
Synthesis of Aryl Silacarboxylates via Palladium-Catalyzed C–O Bond Formation of Silacarboxylic Acids and Aryl Iodides
作者:Jin-Yan Liang、Shou-Jie Shen、Xiao-Hu Xu、Yun-Long Fu
DOI:10.1021/acs.orglett.8b02464
日期:2018.11.2
palladium-catalyzed C–O bond formation method for the synthesis of silacarboxylates by silacarboxylic acids with a broad range of aryl iodides and iodo-N-heterocycles is reported. Electron-deficient, electron-rich, and sterically hindered aryl iodides were well-tolerated to furnish the corresponding aryl silacarboxylates in moderate to excellent yields. Active functional groups, such as −NH2, −CHO, and allyl–, showed
Synthesis of functionalized 3-isochromanones <i>via</i> metal-free intramolecular alkoxylation-initiated cascade cyclization
作者:Ying-Qi Zhang、Xin-Qi Zhu、Yin Xu、Hao-Zhen Bu、Jia-Le Wang、Tong-Yi Zhai、Jin-Mei Zhou、Long-Wu Ye
DOI:10.1039/c9gc01030k
日期:——
A metal-free intramolecular alkoxylation-initiated cascade cyclization of allyl ether-tethered ynamides has been developed. Various highly functionalized 3-isochromanones can be obtained in generally good to excellent yields under mild reaction conditions. Moreover, this asymmetric cyclization has also been realized via a stereocontrolled [3,3] rearrangement by employing a traceless chiral directing
Monoamine re-uptake inhibitors and methods relating thereto
申请人:Kiankarimi Mehrak
公开号:US20060252818A1
公开(公告)日:2006-11-09
Monoamine re-uptake inhibitors and more specifically serotonin and noradrenaline re-uptake inhibitors are disclosed that have utility in the treatment of disorders of the central or peripheral nervous system in both men and women. The compounds of this invention have the structure:
wherein R
1
, R
2
, R
3
, R
4
, R
5
, R
6
, m, n, W, X, and Y are as defined herein, including stereoisomers, prodrugs and pharmaceutically acceptable salts, esters and solvates thereof. Also disclosed are compositions containing a compound of this invention in combination with a pharmaceutically acceptable carrier, as well as methods relating to the use thereof for inhibiting monoamine re-uptake in a subject in need thereof.
Concise Stereoselective Synthesis of Oxaspirocycles with 1-Tosyl-1,2,3-triazoles: Application to the Total Syntheses of (±)-Tuberostemospiroline and (±)-Stemona-lactam R
作者:Junkai Fu、Hongjuan Shen、Yuanyuan Chang、Chuangchuang Li、Jianxian Gong、Zhen Yang
DOI:10.1002/chem.201403756
日期:2014.9.26
A 4‐substituted‐1‐tosyl‐1,2,3‐triazole‐based stereoselective synthesis of structurally diverse oxaspirocycles is reported. The synthesis involves Rh‐catalyzed loss of nitrogen from 4‐substituted‐1‐tosyl‐1,2,3‐triazoles, Grignard reaction, and a ring‐closing metathesis reaction as key steps. By employing readily available and stable 4‐substituted‐1‐tosyl‐1,2,3‐triazoles as surrogates of diazo compounds