Chemistry is traditionally divided into organic and inorganic chemistry. Safety of Pd2(DBA)3, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent£¬Which mentioned a new discovery about 52409-22-0
Investigation of photochromic fluorescence features and synthesis of diarylethene type naphthalimide compounds
The aim of the study was to synthesise novel photo-exchangeable photochromic fluorescent compounds. 3,4-Bis(3,5-dimethyl-4-pyrazolyl)-N-butyl-1,8-naphthalimide 6 and 3,4-bis (1,3,5-trimethyl-4-pyrazolyl)-N-butyl-1,8-naphthalimide 7 naphthalimide derivative new compounds were prepared via two-step Suzuki coupling reaction of pyrazolylboronic acid esters from N-butyl-4-bromo-3-iodo-1,8-naphthalimide and characterized by1H-NMR,13C-NMR, MS and FTIR. Their photochromic fluorescence properties were investigated. Additionally, a solvent effect on the fluorescent properties of 6 and 7 was investigated. Increase of organic solvent polarity results in a red shift (to longer wavelengths) of the fluorescence emissions.
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Reference£º
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method