Conformational Flexibility as a Tool for Enabling Site-Selective Functionalization of Unactivated <i>sp</i><sup><i>3</i></sup> C–O Bonds in Cyclic Acetals
作者:Ciro Romano、Laura Talavera、Enrique Gómez-Bengoa、Ruben Martin
DOI:10.1021/jacs.2c04513
日期:2022.7.6
A dual catalytic manifold that enables site-selective functionalization of unactivated sp3 C–O bonds in cyclic acetals with aryl and alkyl halides is reported. The reaction is triggered by an appropriate σ*–p orbital overlap prior to sp3 C–O cleavage, thus highlighting the importance of conformational flexibility in both reactivity and site selectivity. The protocol is characterized by its excellent
Protection of Carbonyl Compounds as 1,5-Dihydro-2,4- Benzodioxepines Over HZSM-5 Zeolite, As A Reusable Catalyst
作者:M. Tajbakhsh、B. Mohajerani、M. M. Heravi
DOI:10.1080/00397919908085745
日期:1999.1.1
A mild and effecient catalytic method for acetalization of carbonyl compounds as 1,5-dihydro-2,4-benzodioxepines with benzene 1,2-dimethanol using acidic HZSM-5 zeolite as reusable catalyst is described.
Montmorillonite KSF, a Mild and Efficient Catalyst for Benzodioxepination of Carbonyl Compounds
作者:Harish K. Patney
DOI:10.1080/00397919308011246
日期:1993.6
A mild and efficient procedure for the protection of carbonyl compounds as 1,5-dihydro-3H-2,4-benzodioxepines in high yields is described by using a readily available and inexpensive KSF clay catalyst.
Kumar T. Pavan, Reddy K. Ramesh, Reddy Ravinder S., J. Chem. Res. Synop, (1994) N 10, S 394-395
作者:Kumar T. Pavan, Reddy K. Ramesh, Reddy Ravinder S.