ALO, BABAJIDE I.;FAMILONI, OLUWOLE B.;MARSAIS, FRANCIS;QUEGUINER, GUY, J. CHEM. SOC. PERKIN TRANS. PT 1,(1990) N, C. 1611-1614
作者:ALO, BABAJIDE I.、FAMILONI, OLUWOLE B.、MARSAIS, FRANCIS、QUEGUINER, GUY
DOI:——
日期:——
US3957928A
申请人:——
公开号:US3957928A
公开(公告)日:1976-05-18
Sulphur-based directed benzylic metallations: lithiations of alkylarenesulphonates
作者:Babajide I. Alo、Oluwole B. Familoni、Francis Marsais、Guy Queguiner
DOI:10.1039/p19900001611
日期:——
Benzylic anions (6) are obtained by regio-specific lithiations of ethyl 2-methylbenzenesulphonates. Evidence for the presence of the ethyl 2-lithiomethylbenzenesulphonates was obtained by efficient quenching studies with a range of electrophiles. Lithiations of the 2,4-dimethyl compound (9) gave the 2-lithiomethyl anion only, indicative of a predominant co-ordination mechanism in the lithiations.