25540-73-2Relevant articles and documents
Configurational and conformational NMR study of enantiopure 2,2-dimethyl-1-(1-naphthyl)propanol via its carbamate derivatives
Pomares, Marta,Grabuleda, Xavier,Jaime, Carlos,Virgili, Albert,Alvarez-Larena, Angel,Piniella, Joan F.
, p. 885 - 890 (1999)
2,2-Dimethyl-1-(1-naphthyl)propanol was synthesized and the corresponding enantiomers were isolated by chiral HPLC. These enantiomers gave diastereoisomeric carbamates by reaction with (S)-(-)-1-phenylethylisocyanate, which were studied by NMR. The comparison of NMR data and molecular mechanics calculations allowed us to determine the absolute configuration of corresponding alcohols. Finally, x-ray results were in agreement with the absolute configuration proposed from the NMR spectra. Copyright
Chiral phosphoric acid catalyzed asymmetric transfer hydrogenation of bulky aryl ketones with ammonia borane
Zhou, Qiwen,Meng, Wei,Feng, Xiangqing,Du, Haifeng,Yang, Jing
supporting information, (2019/11/28)
An asymmetric transfer hydrogenation of bulky aryl ketones with ammonia borane was successfully realized with chiral phosphoric acid (CPA) as catalyst and water as additive. A variety of optically active secondary alcohols were obtained in good to high yi
Ultrasound assisted Friedel-Crafts acylation of aromatics using ferric sulphate as catalyst
Sridharan, Anandhi,Gopalakrishnan, Geetha
experimental part, p. 1192 - 1195 (2011/10/18)
The use of ultrasound in the acylation reactions of various aromatics and polyaromatics with different acyl chlorides, in the presence of catalytic amount of ferric sulphate at room temperature, gives good yields of the respective ketones with a short reaction time. A facile and simple synthesis of various aromatic ketones using Friedel-Crafts acylation has been established from the corresponding acid chlorides and aromatic or polyaromatic compounds, respectively under mild reaction conditions with shorter reaction times (30-45 min) and in reasonable yields. This method offers the advantage of low cost and ease of purification of the products because of the small amount of ferric sulphate used in these reactions.