A transition metal-free tandem process to pyridazinopyrido[3,2-f][1,4]thiazepine-diones via Smiles rearrangement
作者:Xiaoyi Niu、Bingchuan Yang、Yanqiu Li、Shuai Fang、Zixiao Huang、Caixia Xie、Chen Ma
DOI:10.1039/c3ob40719e
日期:——
A transition metal-free methodology for the synthesis of pyridazinopyrido[3,2-f][1,4]thiazepine-diones was studied. The construction of this tricyclic system went through a one-pot coupling/Smiles rearrangement/cyclization process. The high yields of pure products were obtained through simple recrystallization.
Transition Metal-Free One-Pot Synthesis of Fused 1,4-Thiazepin-5(4<i>H</i>)-ones and Theoretical Study of the S–N Type Smiles Rearrangement Process
作者:Bingchuan Yang、Xiaochen Tan、Ruiying Guo、Shunwei Chen、Zeyuan Zhang、Xianglong Chu、Caixia Xie、Dongju Zhang、Chen Ma
DOI:10.1021/jo5011729
日期:2014.9.5
A series of 1,4-thiazepin-5(4H)-one derivatives were synthesized via a transition metal-free one-pot Smiles rearrangement process at room temperature. Regioselective seven-membered heterocycles were constructed in good to excellent yields. To gain an in-depth understanding of the S-N type Smiles rearrangement mechanism, a theoretical study was also performed by quantum chemistry calculations.
MONGE, A.;MARTINEZ-MERINO, V.;FERNANDEZ-ALVAREZ, E., J. HETEROCYCL. CHEM., 1985, 22, N 5, 1353-1356
作者:MONGE, A.、MARTINEZ-MERINO, V.、FERNANDEZ-ALVAREZ, E.
DOI:——
日期:——
Synthesis of 2-substituted 3-oxoisothiazolo[5,4-<i>b</i>]pyridines