83665-32-1Relevant academic research and scientific papers
Equivalent Loading of Directed Arenes in Pd(II)-Catalyzed Oxidative Cross-Coupling of Aryl C-H Bonds at Room Temperature
Mei, Chong,Zhao, Mengdi,Lu, Wenjun
, p. 2714 - 2733 (2021/02/01)
The unsymmetrical biaryls (Ar1-Ar2) produced by the catalytic cross-couplings of aryl halides (Ar1-halo) with aryl metallics (Ar2-M) in the loading ratio of 1:1 are popular in chemical synthesis. In contrast, there has been less precedence on the same biaryls produced effectively from two normal aryl C-H bonds with equivalent loading. Here, we report that, in a palladium/oxidant/acid catalytic system at room temperature, one arene (Ar1-H, 1 equiv) can highly selectively couple with the other one (Ar2-H, 1 equiv) to afford the target Ar1-Ar2 just by controlling the directing groups and the substituted groups on their phenyl rings. The utility of this one-one cross-coupling is also demonstrated by synthesis of a few bioactive molecules.
Visible-Light-Induced Metal-/Photocatalyst-Free C-H Bond Imidation of Arenes
Kuribara, Takahito,Nakajima, Masaya,Nemoto, Tetsuhiro
supporting information, p. 2235 - 2239 (2020/03/13)
In this study, a visible-light-induced intermolecular C-H bond imidation of arenes was achieved at ambient condition. By using simple phthalimide with (diacetoxyiodo)benzene and molecular iodine, direct metal-/photocatalyst-free C-N bond formation was achieved. The imidation protocol was designed by using time-dependent density functional theory calculations and experimentally demonstrated for 28 substrates with as high as 96% yield. Mechanistic studies indicated that radical-mediated aromatic substitution occurred via photolysis of N-iodophthalimide under visible-light irradiation.
Hypolipidemic Activity of Phthalimide Derivatives. 2. N-Phenylphthalimide and Derivatives
Chapman, James M.,Voorstad, P. Josee,Cocolas, George H.,Hall, Iris H.
, p. 237 - 243 (2007/10/02)
A series of substituted N-phenylphthalimide derivatives was synthesized and examined for their ability to lower serum cholesterol and triglyceride levels in mice at 20 (mg/kg)/day, ip.Of the newly synthesized compounds, the most potent compound, o-(N-phthalimido)acetophenone, lowered serum cholesterol 57percent after 16 days and lowered serum triglyceride levels 44percent after 14 days. o-(N-Phthalimido)acetophenone was observed to be active in both normogenic (normal blood lipids levels) and hyperlipidemic mice and normogenic rats.In the latter, the reduction of serum lipids was reversible.The mode of action of this compound appeared to be multiple, including blockage of the de novo synthesis of lipids and acceleration of the excretion of lipids.The lipoprotein fractions of rat blood were reduced significantly in cholesterol, triglyceride, and neutral lipid content after 14 days treatment with o-(N-phthalimido)acetophenone.
