Theoretical Study of Conversion Reactions of Ketone to Hydroxyalkylene in Cluster Models of Zeolite H-ZSM-5. J. Mol. Catal. A Chem. 2005, 239, 68-75. [CrossRef]Theoretical study of conversion reactions of ketone to hydroxyalkylene in cluster models of zeolite H-ZSM-5[J] . Attasak ...
9.In low temperature, reaction of ketone with sodium acetylide synthesized 1 - ethynyl - 2,3, 4,5 - tetramethyl - 2 - cyclopentene - 1 - ol; 1,2 - diphenyl - 2 - hydroxy - 3 - butine - 1 - one; 3,4 - diphenyl - 1,5 - hexadiine - 3,4 - diol and 3,4 - diphenyl -...
Interception of this electrophilic intermediate in Passerini reaction pathway by carbon nucleophiles (in place of conventionally used carboxylic acids) would offer an intriguing access to α-hydroxyketone products; yet such synthetic maneuver remains underexplored59,60. Central to the successful establishment...
Cesium formate was first used as hydrolysis agent for the conversion of α-haloketones to α-hydroxyketones in dry MeOH solution. Download: Download full-size image Introduction α-Hydroxyketone moieties are structural features [1], [2], [3], [4], [5], [6], [7] and synthetic precursor...
Here, we show that a TiO2-CH3CN photocatalytic suspension system enables the insertion of dioxygen into one C(sp3)–C(sp3) bond of strained cycloparaffin derivatives, by which difunctionalized hydroxyketone products are obtained in a one-pot reaction. With the cleavage event to release strain ...
The invention relates to a method of stabilizing hydroxy ketone products subject to problems of instability and color development. According to the method of the invention 15 to 200 ppm of 4-butyl- tertiary-catechol (TBC) are added in solid form or in solution to a ton of finished product ...
Carbonyl ylide formation from the rhodium (II) acetate catalyzed reaction of a α-diazoketone Reaction of the α-diazoketone derived from 7-carboxyphthalide with rhodium acetate results in an internal cyclization to give a six-ring carbonyl ylide wh......
Oxidation of canarigenone (IV) by peroxy-acid gave the 4β,5β-epoxide (V), which was reduced by chromium(II) acetate to the 5β-hydroxy-3-ketone (VI). Selective reduction of this with Urushibara nickel A led to periplogenin (Ia). The epoxy-ketone (V) was also prepared from ...
(as depicted in Scheme 9(b)), with the notable exception that instead of acting as the electrophile, the acetyl–enzyme intermediate is deprotonated by a glutamate acting as a general base to turn it into the enolate nucleophile; the enolate subsequently attacks the ketone of acetoacetyl-Co...
Efficient coupling of 2-iodophenols with aromatic isothiocyanates catalyzed by CuCl2 under basic conditions to give 2-imino-1,3-benzoxathioles 163 has been described (2011TL1964). Reaction of the diazo ketone 164 with the thiocarbonyl group of 165 first leads to a thiocarbonyl ylide which then...