32368-19-7Relevant articles and documents
An activated catalyst RhH(PPh3)4-dppe-Me 2S2 for α-methylthiolaton of α-phenyl ketones
Arisawa, Mieko,Toriyama, Fumihiko,Yamaguchi, Masahiko
scheme or table, p. 18 - 23 (2011/10/09)
In the presence of catalytic amounts of RhH(PPh3)4, 1,2-bis(diphenylphosphino)ethane (dppe), and dimethyl disulfide, cyclic and acyclic α-phenyl ketones reacted with p-cyano-α- methylthioacetophenone giving α-methylthio-α-phenylketones. The activated catalyst containing dimethyl disulfide was effective for the α-methylthiolation reaction of these less reactive substrates.
Rhodium-catalyzed α-methylthiolation reaction of unactivated ketones using 1,2-diphenyl-2-methylthio-1-ethanone for the methylthio transfer reagent
Arisawa, Mieko,Toriyama, Fumihiko,Yamaguchi, Masahiko
experimental part, p. 2305 - 2312 (2011/04/22)
In the presence of catalytic amounts of RhH(PPh3)4, 1,2-bis(diphenylphosphino)ethane (dppe), and dimethyl disulfide, ketones without α-activating groups were α-methylthiolated with 1,2-diphenyl-2-methylthio-1-ethanone giving α-methylthio ketones. The reaction of unsymmetrical ketones proceeded at the more substituted carbons. The initial formation of kinetic α-methylthiolated products followed by their rearrangement to thermodynamic products was observed in the reaction of α-phenyl ketones. Aldehydes, phenylacetate, and phenylacetonitrile were also α-methylthiolated under these conditions.
MILD REACTION OF PUMMERER REARRANGEMENT PRODUCTS WITH AROMATIC COMPOUNDS IN THE PRESENCE OF LEWIS ACIDS. APPLICATION TO THE PREPARATION OF ARYLMETHYLENE KETONES, ARYLACETOESTERS, AND ARYLACETONITRILES.
Stamos, Ioannis K.
, p. 477 - 480 (2007/10/02)
Pummerer intermediates generated from precursors (3), (4) and (5) reacted mildly with aromatic compounds in the presence of Lewis acids to give the corresponding sulfides which in turn desulfurized to arylmethylene ketones, arylacetoesters, and arylaceton
