Photoinduced Synthesis of Bis‐Sulfonyl γ‐Arylated Ketones via DMAP/DDQ‐Mediated Stereogenic Conjugated Addition of α‐Sulfonyl Chalcones with Benzylic Sulfones
作者:Nai‐Chen Hsueh、Meng‐Yang Chang
DOI:10.1002/adsc.202201347
日期:2023.2.21
The DMAP/DDQ-mediated stereochemical conjugated addition of sulfonyl chalcones and benzylic sulfones under photolytic irradiation produces diverse bis-sulfonyl γ-arylated ketones with three contiguous stereogenic centers in a yield of 79%–92%. Herein, a plausible mechanism is proposed and discussed.
Stereoselective synthesis of highly substituted trans-2,3-dihydrofuran and trans-1,2-cyclopropane derivatives containing sulfonyl groups
作者:Weiguo Cao、Hui Zhang、Jie Chen、Xiaohong Zhou、Min Shao、Mark C. McMills
DOI:10.1016/j.tet.2007.10.073
日期:2008.1
trans-2,3-Dihydrofuran derivatives 3 and trans-1,2-cyclopropane derivatives 4 were prepared with high chemoselectivity and moderate overall chemical yield by the reaction of alpha,beta-unsaturated sulfones 1 with arsonium bromides 2 in the presence of potassium carbonate. The structures of products obtained were identified by IR, MS, (1)H NMR, elemental analysis, and X-ray diffraction analysis. (c) 2007 Elsevier Ltd. All rights reserved.