Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Reagents and conditions: (a)642 LiPPh2, THF, rt; (b)642 H2O2, DCM, rt; (c)642 Pd(OAc)2, PCy3·HBF4, t-BuCO2H, K2CO3, DMA, 120 °C; (d)642 conc. H2SO4, TFA, 0 °C, and then, Zn(OAc)2·2H2O, DCM/MeOH, rt; (e)642,643 HSiCl3, toluene, reflux; (f)643 5-methyl-2-thienylzinc chloride lithium chloride, Pd2(dba)3, RuPhos, THF, reflux; (g)643 PBr3, ZnI2, o-dichlorobenzene, 180 °C; then, H2O2; (h)643 HSiCl3, toluene, rt.
