1171919-08-6Relevant articles and documents
Engineering High-Potential Photo-oxidants with Panchromatic Absorption
Jiang, Ting,Polizzi, Nicholas F.,Rawson, Jeff,Therien, Michael J.
, p. 8412 - 8415 (2017)
Challenging photochemistry demands high-potential visible-light-absorbing photo-oxidants. We report (i) a highly electron-deficient Ru(II) complex (eDef-Rutpy) bearing an E1/20/+ potential more than 300 mV more positive than that of any established Ru(II) bis(terpyridyl) derivative, and (ii) an ethyne-bridged eDef-Rutpy-(porphinato)Zn(II) (eDef-RuPZn) supermolecule that affords both panchromatic UV-vis spectral domain absorptivity and a high E1/20/+ potential, comparable to that of Ce(NH4)2(NO3)6 [E1/2(Ce3+/4+) = 1.61 V vs NHE], a strong and versatile ground-state oxidant commonly used in organic functional group transformations. eDef-RuPZn exhibits ~8-fold greater absorptive oscillator strength over the 380-700 nm range relative to conventional Ru(II) polypyridyl complexes, and impressive excited-state reduction potentials (1E-/? = 1.59 V; 3E-/? = 1.26 V). eDef-RuPZn manifests electronically excited singlet and triplet charge-transfer state lifetimes more than 2 orders of magnitude longer than those typical of conventional Ru(II) bis(terpyridyl) chromophores, suggesting new opportunities in light-driven oxidation reactions for energy conversion and photocatalysis.
Synthesis method of 2-pyridylaldehyde derivative
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Paragraph 0067-0071; 0087-0089, (2018/09/28)
The invention relates to the field of medical intermediates, in particular to a synthesis method of 2-pyridylaldehyde derivative. A synthesis path shown in the formula 1 is adopted, wherein X can be Cl or Br or CF3. Cheap starting raw materials are adopted, the use of hazardous materials which have large toxicity and are easily explosive is avoided, the cost of the product is greatly lowered, popularization and industrialized production are facilitated, and the synthesis method has the advantages of being low in cost, easy to operate, high in yield, easy to industrialize and the like. The formula 1 is shown in the description.