16727-05-2Relevant academic research and scientific papers
Photocatalytic decarboxylative alkylations mediated by triphenylphosphine and sodium iodide
Fu, Ming-Chen,Shang, Rui,Zhao, Bin,Wang, Bing,Fu, Yao
, p. 1429 - 1434 (2019/04/30)
Most photoredox catalysts in current use are precious metal complexes or synthetically elaborate organic dyes, the cost of which can impede their application for large-scale industrial processes. We found that a combination of triphenylphosphine and sodium iodide under 456-nanometer irradiation by blue light–emitting diodes can catalyze the alkylation of silyl enol ethers by decarboxylative coupling with redox-active esters in the absence of transition metals. Deaminative alkylation using Katritzky’s N-alkylpyridinium salts and trifluoromethylation using Togni’s reagent are also demonstrated. Moreover, the phosphine/iodide-based photoredox system catalyzes Minisci-type alkylation of N-heterocycles and can operate in tandem with chiral phosphoric acids to achieve high enantioselectivity in this reaction.
Chemoselective addition of Grignard reagents to alkoxycarbonylalkyl-N-imidazolium-N-methyl amides: Synthesis of 4-oxo and homologous esters
De Las Heras, Maria A.,Vaquero, Juan J.,Garcia-Navio, Jose L.,Alvarez-Builla, Julio
, p. 1817 - 1820 (2007/10/03)
A method for the synthesis of 4-oxo and homologous esters is achieved by metalation of alkoxycarbonylalkyl-N-imidazolium-N-methyl amides with 1 equiv of LDA followed by highly chemoselective addition of 1 equiv of a Grignard reagent.
Photosensitive compound
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, (2008/06/13)
Photosensitive compounds having preferably a functional group such as --SO2 Cl, --SO3 H, --SO3 R, STR1 (R, R', R" being alkyl) on a terminal benzene or naphthalene ring connected via a methylene group and STR2 moiety are improved in sensitivity to light and thermal stability, and thus useful in a photo resist.
