Ooh LA LA: The reductive amination of levulinic acid with a variety of aliphatic amines and aniline derivatives including stericallyhinderedamines is presented. The reaction is promoted by an iridium catalyst operating at low loading and 5 bar H2 under neat conditions. The catalyst was also efficient for the synthesis of N-aryl isoindolinone in high yields.
Ooh LA LA:提出了乙酰丙酸与多种脂族胺和苯胺衍生物(包括位阻胺)的还原胺化反应。铱催化剂在低负载和5 bar H 2的纯净条件下运行可促进反应。该催化剂对于高产率地合成N-芳基异吲哚啉酮也是有效的。
Formic acid as a hydrogen source for the iridium-catalyzed reductive amination of levulinic acid and 2-formylbenzoic acid
The aqueous phase catalytic reductiveamination of levulinicacid (LA) into pyrrolidones and 2-formylbenzoic acid into N-arylisoindolines is reported. The catalytic reaction involves an iridium catalyst bearing an electron-rich dipyridylamine ligand and uses formic acid as a hydrogen source. The chemoselective iridium catalyst displayed high efficiency for the synthesis of a variety of N-substituted
Application of the Mild-Condition Phthalimidine Synthesis with Use of 1,2,3-1H-Benzotriazole and 2-Mercaptoethanol as Dual Synthetic Auxiliaries. Effective Synthesis of Phthalimidines Possessing a Variety of Substituents at 2-Position
The mild-condition phthalimidine synthesis based on Mannich type 1:1 condensation reaction between o-phthalaldehyde with a variety of primary amines in the presence of excess 2-mercaptoethanol and 1,2,3-1H-benzotriazole as "dual synthetic auxiliaries" in MeCN for 13 h at room temperature afford 2-substituted phthalimidines (2,3-dihydroisoindol-1-one) in fair to good isolated yields.
Transition metal free intramolecular selective oxidative C(sp<sup>3</sup>)–N coupling: synthesis of N-aryl-isoindolinones from 2-alkylbenzamides
isoindolinones including indoprofen and DWP205190 drugs from 2-alkylbenzamide substrates by transition metal-free intramolecular selective oxidativecoupling of C(sp(3))-H and N-H bonds utilizing iodine, potassium carbonate and di-tert-butyl peroxide in acetonitrile at 110-140 degrees C.