Direct .alpha.-phosphoryloxylation of ketones and (phosphoryloxy)lactonization of pentenoic acids with [hydroxy[(bis(phenyloxy)phosphoryl)oxy]iodo]benzene
simple approach for palladium-catalyzed C–H functionalization reactions utilizing an organophosphorus/sulfonate hypervalent iodine reagent as both an oxidant and the source of a functional group has been developed. Through this method, the oxidative phosphorylation-, sulfonation-, and hydroxylation of unactivated benzyl C(sp3)–H bonds, along with the hydroxylation and arylation of aryl C(sp2)–H bonds,
Convenient, Solvent-Free Method for Preparation of [Hydroxy(phosphoryloxy)iodo]arenes
作者:Min Zhu、Cheng Gang Cai、Wei Ke、Jing Shao
DOI:10.1080/00397910903097229
日期:2010.4.12
A convenient, solvent-free method for preparation of [hydroxy(phosphoryloxy)iodo]arenes is reported. (Diacetoxyiodo)benzene or other hypervalent iodine reagents and phosphates are simply blended and ground for several minutes in an agate mortar, giving good yields of [hydroxy(phosphoryloxy)iodo]arenes with excellent purities.
Reactivities of Novel [Hydroxy(tosyloxy)iodo]arenes and [Hydroxy(phosphoryloxy)iodo]arenes for α-Tosyloxylation and α-Phosphoryloxylation of Ketones
作者:Takahiro Nabana、Hideo Togo
DOI:10.1021/jo0200670
日期:2002.6.1
[hydroxy(tosyloxy)iodo]arenes bearing 2-thienyl, 3-thienyl, N-tosyl-4-pyrazolyl, 3-trifluoromethylphenyl, and 3,5-bis(trifluoromethy)phenyl as an aromatic group, and [hydroxy(phosphoryloxy)iodo]arenes bearing N-tosyl-4-pyrazolyl, 3-trifluoromethylphenyl, and 3,5-bis(trifluoromethy)phenyl as an aromatic group, were prepared. alpha-Tosyloxylation and alpha-phosphoryloxylation of ketones with these compounds were
Iodophosphoryloxylation of Carbon−Carbon Multibonds and Its Application to Glycals
作者:Takahito Muraki、Masataka Yokoyama、Hideo Togo
DOI:10.1021/jo000296r
日期:2000.7.1
Iodophosphoryloxylation of carbon-carbon multibonds was attempted. Alkynes and cyclohexene were converted to the corresponding 1,2-iodophosphoryloxylated compounds in moderate to good yields with a trivalent iodine compound/iodine system, while glucal gave mainly the corresponding iodohydrin compound in this system. However, 2-deoxy-2-iodoglycosyl diphenylphosphinates were obtained from the corresponding glycals with a diphenylphosphinic acid/iodine/potassium carbonate system in good yields. Moreover, triethylborane smoothly reduced 2-deoxy-2-iodoglycosyl diphenylphosphinates to 2-deoxyglycosyl diphenylphosphinates in a 1,4-cyclohexadiene solvent.
Regiospecific conversion of terminal alkynes to ketol phosphates with an iodine (III)-phosphate reagent
作者:Gerald F. Koser、Xiao Chen、Kuanchiang Chen、Guoping Sun
DOI:10.1016/0040-4039(93)89010-n
日期:1993.1
Terminal alkynes undergo regiospecific conversion to ketol phosphates when treated with the iodine(II)-phosphate 2 in acetonitrile containing water.