β-Oxygen Effect in the Barton–McCombie Deoxygenation Reaction: Further Experimental and Theoretical Findings
作者:Alma Sánchez-Eleuterio、Jacinto Sandoval-Lira、Jenny García-Sánchez、Lorena Monterrosas-Pérez、Julio M. Hernández-Pérez、Leticia Quintero、Fernando Sartillo-Piscil
DOI:10.1021/jo4012943
日期:2013.9.20
of the bond undergoing cleavage and this with the two C–O antibonding orbitals anti oriented. Such molecular orbital interactions are not present in the α-ribo-furanose; therefore, the β-scission is highly delayed, and due to the reversibly nature of the stannyl radical addition, the ribo-furanose xanthate is forced to take an alternative route: the homolytic substitution (SH2) of the sulfide sulfur