Cu-Catalyzed Coupling of Aryl Iodides with Thiols Using Carbonyl-Phosphine Oxide Ligands
作者:Haolong WANG、Boshun WAN
DOI:10.1016/s1872-2067(10)60243-4
日期:2011.1
A series of carbonyl-phosphine oxide ligands were synthesized from 2-bromophenylaldehyde and used in Cu-catalyzed C-S coupling reactions. Aryl iodide and aryl bromide reacted with thiols efficiently upon catalysis under mild reaction conditions and a yield of up to 99% was obtained.
Covalent Modification of Cyclooxygenase-2 (COX-2) by 2-Acetoxyphenyl Alkyl Sulfides, a New Class of Selective COX-2 Inactivators
作者:Amit S. Kalgutkar、Kevin R. Kozak、Brenda C. Crews、G. Phillip Hochgesang、Lawrence J. Marnett
DOI:10.1021/jm980303s
日期:1998.11.1
hept-2-ynyl sulfide (70) (Science 1998, 280, 1268-1270). Compound 70 selectively inactivates COX-2 by acetylating the same serine residue that aspirin acetylates. This paper describes the extensive structure-activity relationship (SAR) studies on the initial lead compound 2-acetoxyphenyl methyl sulfide (36) that led to the discovery of 70. Extension of the S-alkyl chain in 36 with higher alkyl homologues
compounds have been synthesized and studied by means of NMR, IR, and UV spectra with special attention to H-bonding. These compounds appeared to exist in the chelated form. Furthermore, a detailed investigation of the electron-impact mass-spectra has been carried out,-in the case of sulphoxides, by means of a computer-monitored mixture analysis.
Catalytic enantioselective synthesis of chiral sulfonium ylides with S-stereogenic center
作者:Xu-Jie Wang、Huan-Huan Liu、Jun Kee Cheng、Shao-Hua Xiang、Bin Tan
DOI:10.1016/j.chempr.2023.02.017
日期:2023.3
developed the first catalytic enantioselective synthesis of sulfonium ylides with a chiral sulfur center. They are constructed from a broad array of sulfides in high yields (up to 98%) and enantioselectivities (up to 99%) through copper-catalyzed intramolecular carbene transfer reaction. The obtained ylides could be converted into alkylidenecyclopropanes with efficient sulfur-to-carbon chirality transfer.