Transition-Metal-Free C–H Hydroxylation of Carbonyl Compounds
作者:Moreshwar B. Chaudhari、Yogesh Sutar、Shreyas Malpathak、Anirban Hazra、Boopathy Gnanaprakasam
DOI:10.1021/acs.orglett.7b01616
日期:2017.7.7
and reductant free α-C(sp3)–H hydroxylation of carbonyl compounds are reported. This method is promoted by commercially available inexpensive KO-t-Bu and atmospheric air as an oxidant at room temperature. This unified strategy is also very facile for hydroxylation of various carbonyl compound derivatives to obtain quaternary hydroxyl compounds in excellent yield. A preliminary mechanistic investigation
A novel photocatalytic acylarylation of unactivated alkenes using diaryliodonium salts as the arylation reagent is described. The reaction produces a variety of 2-benzyl indanones, 3,4-dihydronaphthalen-1(2H)-ones, and 2,3-dihydroquinolin-4(1H)-ones in promising yields with excellent diastereoselectivity under very mild conditions, which may be appealing for the synthesis of biologically active molecules
A chemoselective iridium-catalyzed transfer hydrogenation of α, β-unsaturatedketones was realized in water. The CC double bonds of 2-benzylidene indanones and analogues were hydrogenated exclusively catalyzed by an iridium complex (0.1 mol%) bearing a pyridine-imidazoline ligand, using a mixture of formic acid/triethyl amine (molar ratio: 5/2) as a hydrogen source in water. A series of 2-benzyl indanones
Ni-Catalyzed Alkene Carboacylation via Amide C–N Bond Activation
作者:James A. Walker、Kevin L. Vickerman、Jenna N. Humke、Levi M. Stanley
DOI:10.1021/jacs.7b06191
日期:2017.8.2
We report Ni-catalyzed formal carboacylation of o-allylbenzamides with arylboronic acid pinacol esters. The reaction is triggered by oxidative addition of an activated amide C–N bond to a Ni(0) catalyst and proceeds via alkene insertion into a Ni(II)–acyl bond. The exo-selective carboacylation reaction generates 2-benzyl-2,3-dihydro-1H-inden-1-ones in moderate to high yields (46–99%) from a variety
One-pot inter- and intramolecular Friedel–Crafts reactions in Baylis–Hillman chemistry: a novel facile synthesis of ( E )-2-arylideneindan-1-ones
作者:Deevi Basavaiah、Ravi Mallikarjuna Reddy
DOI:10.1016/s0040-4039(01)00354-9
日期:2001.4
A simple one-pot stereoselective transformation of tert-butyl 3-aryl-3-hydroxy-2-methylenepropanoates, the Baylis–Hillman adducts obtained from t-butyl acrylate, into (E)-2-arylideneindan-1-ones involving one inter- and one intramolecular Friedel–Crafts reaction is described.