MoOPH oxodiperoxymolybdenum

BuLi, THF, -78° O2 or MoOPH, [oxodiperoxymolybdenum-(hexa-methylphosphorictriamide)(pyridine)], 30-68% yield. This method uses the amide carbonyl to direct benzylic metalation. [Pg.639]

MoOPH Oxodiperoxymolybdenum(pyridine) hexamethylphosphoramide (Mo05-Py HMPA)... [Pg.117]

MoOPH = Oxodiperoxymolybdenum(pyridine)hexamethylphosphoramide NaHMDS = Sodium hexamethyidisilane... [Pg.2]

HYDROXYLATION OF ENOLATES WITH OXODIPEROXYMOLYBDENUM(PYRIDINE)-(HEXAMETHYLPHOSPHORIC TRIAMIDE), MoOc-Py-HMPA (MoOPH) ... [Pg.227]

More recently, a new molybdenum complex, oxodiperoxymolybdenum-pyridine 3,4,5,6-tetrahydro-1,3-dimcthyl-2-(l //)-pyrimidinonc (MoOs py DMPU = MoOPD) has been introduced in which 1,3-dimethyl-3,4,5,6-tetrahydro-2(lf/>pyrimidinone (DMPU) is used as a non-carcinogenic alternative to HMPA54. This reagent offers comparable results to MoOPH reagent in the oxygenation of enolates (Table 4). [Pg.7]

Enolate Hydroxylation. Treatment of the sodium enolates with the Davis oxaziridine reagent affords the hydroxylated products with the same sense of induction as the alkylation products (eq 23). Although high diastereoselectivity may be achieved with Oxodiperoxymolybdenum(pyridine)(hexamethylphosphoric triamide) (MoOPH), such reactions proceed in lower yields. [Pg.60]

Oxodiperoxymolybdenum-pyridine-hexamethylphosphoric triamide, MoOj CjHsN-HMPA (MoOPH), which is prepared from molybdenum trioxide, M0O3 [531,532], hydroxylates the enolates of ketones and esters in the a position with respect to the carbonyl groups [537, 532, 533] and, in the presence of mercuric acetate, converts acetylenes into a-dicarbonyl compounds [534]. [Pg.21]

Oxidation of ketones to a-hydroxyketones by means of oxodiperoxymolybdenum (pyridine) (hexamethylphosphoric triamide) (MoOPH) prepared and Mo03, 30% H202,... [Pg.391]

Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...