Intramolecular reactions. Part 12. Ring size and leaving group effects on inter- and intra-molecular nucleophilic substitution by carbanions
作者:Roger Bird、Gwerydd Griffiths、Gwynfor F. Griffiths、Charles J. M. Stirling
DOI:10.1039/p29820000579
日期:——
group is +1.7, and for intermolecular substitution by bis-sulphonyl stabilised carbanions, +1.2. Attempts to obtain ρLG values for five-membered ring formation were frustrated by competing intermolecular reactions. The results are discussed against the background of previous work on ring formation by intramolecularnucleophilicsubstitution.
Manganese-catalyzed regiospecific sp<sup>3</sup>C–S bond formation through C–C bond cleavage of cyclobutanols
作者:Rongguo Ren、Zhen Wu、Chen Zhu
DOI:10.1039/c6cc01843b
日期:——
A manganese-catalyzed regioselective sp3 C-S bond formation through C-C bond cleavage of cyclobutanols is described. A variety of primary and secondary alkyl thioethers are efficiently prepared under mild reaction conditions....