Comparison of(η~6-Fluoroarene)tricarbonylchromium Complexes with Their Chloro-analogs in Radical Aromatic Substitutions

Reactions of fluoroarene-Cr(CO)_3 complexes with SmI_2 andcarbonyl compounds in THF/HMPA at-40— -60℃ affordedthe corresponding radical aromatic substitution products in highyield. Compared to the corresponding chloroarene-Cr.(CO)_3complexes, fluoroarene-Cr(CO)_3 complexes showed a higher ef-ficiency and slightly lower regioselectivity.     

有机自由基化学

李超忠, 朱晨. 有机自由基化学[J]. 化学学报, 2019, 77(9): 771-772.     

Studies on organophosphorus compounds 104. Reaction of carbanions derived from alkylphosphonates

Structural effect of substituents directly bonded to carbanions bearing a phosphorate moiety is examined. Nucleophihc addition of phosphonate carbanion to 1-nitroalkene followed by subsequent reaction with chlorotrimethylsilane leads to a series of 2-isoxazoline based on the formation of an alkene and silyl nitronate as a 1,3-dipole. On the other hand, addition of carbanion derived from isocyanomethylphosphonate to nitroalkene with the formation of nitronate followed by intromolecular cyclization provides substituted phosphoryl pyrroles.     

芳基金属络合物的自由基反应研究进展

综述了近年来芳基金属络合物与自由基的加成和取代反应的研究进展，并简要 讨论了该领域的发展方向。     

Comparison of （η^6－Fluoroarene）tricarbonylchromium Complexes with Their Chloro－analogs in Radical Aromatic Substitutions

Reactions of fluoroarene-Cr(CO)3 complexes with SmI2 and earbonyl compounds in THF/HMPA at -40～- 60℃ afforded the correspoDdin~ radical aromatic substitution products in high yield. Compared to the corresponding chloroarene-Cr(CO)3 complexes, fluoroarene-Cr(CO)3 complexes showed a higher efficiency and slightly lower regioselectivity.     

仲壬基苯氧基乙酸萃取金属离子

Eu3+;二价金属离子;仲壬基苯氧基乙酸萃取金属离子