Base Mediated Synthesis of Alkyl-aryl Ethers from the Reaction of Aliphatic Alcohols and Unsymmetric Diaryliodonium Salts
摘要:
The base mediated coupling of aliphatic alcohol pronudeophiles with unsymmetric diaryliodonium salt electrophiles is described. This metal-free reaction is operationally simple, proceeds at mild temperature, and displays broad substrate scope to generate industrially important alkyl-aryl ethers in moderate to excellent yield. The synthetic utility of these reactions is demonstrated, and aspects of sustainability are highlighted by the use of unsymmetric aryl(mesityl)iodonium arylating reagents.
Positive allosteric modulators of the nicotinic acetylcholine receptor
申请人:——
公开号:US20030236287A1
公开(公告)日:2003-12-25
The invention provides compounds of Formula I:
1
These compounds may be in the form of pharmaceutical salts or compositions, may be in pure enantiomeric form or racemic mixtures, and are useful in pharmaceuticals used to treat diseases or conditions in which &agr;7 nAChR is known to be involved.
Origin of<sup>13</sup>C complexation shifts in the adduct formation of 2-butyl phenyl ethers with a dirhodium tetracarboxylate complex
作者:Edison Díaz Gómez、Helmut Duddeck
DOI:10.1002/mrc.2116
日期:2008.1
Complexation of the oxygen atom in 2‐butyl phenylethers to a rhodium atom of the dirhodiumtetracarboxylate Rh(II)2[(R)‐(+)‐MTPA]4(Rh*, MTPA‐H = methoxytrifluoromethylphenylacetic acid ≡ Mosher's acid) deshields an sp3‐hybridized 13C nucleus directly bonded to the ether oxygen; apparently, the inductive effect of the oxygen is enhanced when it is complexed to the rhodium atom. On the other hand, deshielding
Chemiluminescent probes for diagnostics and in vivo imaging
申请人:RAMOT AT TEL-AVIV UNIVERSITY LTD.
公开号:US10660974B2
公开(公告)日:2020-05-26
Dioxetane-based chemiluminescence probes, more specifically fluorophore-tethered dioxetane-based chemiluminescence probes and π* acceptor group-containing dioxetane based chemiluminescence probes can be included in compositions. The chemiluminescence probes are useful for both diagnostics and in vivo imaging.