各种酚与苯甲酰氯的反应得到苯甲酸苯酯的衍生物,随后对其进行弗里斯重排。将获得的2-羟基二苯甲酮类似物与线性脂族三胺结合,得到五齿席夫碱配体。此外,九种新的铁(III)络合物与通式的[Fe(L Ñ)X](其中,L Ñ是五齿席夫碱配体的二价阴离子,Ñ,Ñ ' -双((2-羟基-5-甲基苯基)苯基)亚甲基-1,5-二氨基-3-氮杂戊烷= H 2 L 1,N,N'-双((2-羟基-3,5-二甲基苯基)苯基)亚甲基-1,5-二氨基-3 -氮杂戊烷= H2 L 2, N, N'-双((2-羟基-5-氯苯基)苯基)亚甲基-1,5-二氨基-3-氮杂戊烷= H 2 L 3, N, N'-双((2-羟基-4-甲基苯基)苯基)亚甲基-1,5-二氨基-3-氮杂戊烷= H 2 L 4, N, N'-双((2-羟基-5-溴苯基)苯基)亚甲基-1,7-二氨基- 4-氮杂庚烷= H 2 L 5, N, N'-双((2-羟基-5-溴苯基)苯基)亚甲基-1
Nickel-Catalyzed Decarbonyloxidation of 3-Aryl Benzofuran-2(<i>3H</i>)-ones to 2-Hydroxybenzophenones
作者:Zhou Tong、Zhi Tang、Chak-Tong Au、Renhua Qiu
DOI:10.1021/acs.joc.0c00858
日期:2020.7.2
nickel-catalyzed decarbonyloxidation of 3-aryl benzofuran-2(3H)-ones to 2-hydroxybenzophenones under mild conditions, which is an efficient approach for the decarbonyloxidation of lactones in organic synthesis. A diverse range of substrates can undergo C(O)–O/C(O)–C bondcleavage to generate the target products in good yields. These 2-hydroxybenzophenones can be converted into a variety of compounds via reactions
Evaluation of Chiral Recognition Ability of a Novel Uranyl–Salophen-Based Receptor: An Easy and Rapid Testing Protocol
作者:Antonella Dalla Cort、José Ignacio Miranda Murua、Chiara Pasquini、Miquel Pons、Luca Schiaffino
DOI:10.1002/chem.200400016
日期:2004.7.5
A novel member of a new class of chiral uranyl-salophen complexes has been synthesised. The chiralrecognitionability of this receptor toward the enantiomers of two primary amines, a sulfoxide, and a quaternary ammonium chloride has been evaluated for the first time. The enantioselectivities obtained are encouraging. The NMR method developed for this purpose allows a fast, quantitative determination
Chemoselective C-benzoylation of phenols by using AlCl3 under solvent-free conditions
作者:S. V. Gaikwad、B. R. Nawghare、P. D. Lokhande
DOI:10.4314/bcse.v29i2.14
日期:——
Substitutedphenols were chemo-selectively reacted with benzoylchloride in presence of aluminumchloride under solvent-free condition to afford the corresponding 2'-hydroxy aryl benzophenones in excellent yields (72-96%). Naphthol benzoylation resulted in lower yields as compared to phenols. Both reactions completed in 5-10 min with quantitative yields providing excellent control over regioselectivity