o-Benzoylbenzoic acids by the reaction of lithium 2-lithiobenzoates with acid chlorides. A contribution to the chemistry of alizarin and podophyllotoxin
o-Benzoylbenzoic acids by the reaction of lithium 2-lithiobenzoates with acid chlorides. A contribution to the chemistry of alizarin and podophyllotoxin
作者:William E. Parham、Charles K. Bradsher、Kevin J. Edgar
DOI:10.1021/jo00319a003
日期:1981.3
Photochemical transformations. 35. Stereochemistry of electron transfer from photoexcited aromatic rings to carbon-chlorine bonds. Syn stereochemistry of migration in photo-Wagner-Meerwein rearrangements
作者:Stanley J. Cristol、Dave G. Seapy、Ellen O. Aeling
DOI:10.1021/ja00363a022
日期:1983.11
and are rationalized by the Weller equation. Separation of chloride ion from the presumed zwitterionic biradical is accompanied by ''Wagner-Meerwein'' rearrangement but is predominately syn, rather than anti as in the ground state. The rearrangement stereochemistry is consistent with the idea that, in the principal photochemical process, migration with retention of configuration is concerted with the