Photocatalyzed reduction of diaryliodonium salts was achieved by using [Cu(dpp)2][PF6] as a photoactive complex and DIPEA as a reductive quench. The application of a copper catalyst allows the generation of aryl radicals under mild conditions and maintains their reactivity for CC bond formation processes.
Free radical alkylation of tri-O-benzoyl-6-exo-bromo-levoglucosan: approaches to the synthesis of okadaic acid
作者:David R Kelly、Jassem G Mahdi
DOI:10.1016/s0040-4039(01)02181-5
日期:2002.1
Tri-O-benzoyl-6-exo-bromo-levoglucosan undergoes stereoselective freeradicalalkylation to give 6-exo-substituted-1,6-anhydrosugars with six contiguous chiral centres.