Pulling Outward but Reacting Inward: Mechanically Induced Symmetry-Allowed Reactions of cis- and trans-Diester-Substituted Dichlorocyclopropanes
作者:Stephen L. Craig、Zi Wang、Tatiana B. Kouznetsova
DOI:10.1055/a-1760-8817
日期:2022.6
The mechanically induced symmetry-allowed disrotatory ring-openings of cis- and trans- gem-dichlorocyclopropane (gDCC) diesters are demonstrated through sonication and single-molecule force spectroscopy (SMFS) studies. In contrast to the previously reported symmetry-forbidden conrotatory ring-opening of alkyl-tethered trans-gDCC, we show that the diester-tethered trans-gDCC primarily undergoes a symmetry-allowed
Treatment of gem-dichlorocyclopropanecarboxylic acids with SF4 yields many rearranged products, i.e. 1,1-difluoro-substituted olefins. The mechanism of the rearrangement is discussed.