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Powder contg.benzoyl peroxide is readily wetted by contacting the powder with a liq.contg.water and one or more water-sol.org.solvents in a concn.sufficient to reduce the surface tension of the liq.to less than 64 dynes/cm.Benzoyl peroxide powder was wetted with a fluid comprising propylene glycol and water to facilitate the prepn.of a stable micronized suspension to be used in manufg.a 3.13% benzoyl peroxide topical gel.
C-H amination of N-aryl benzamides with O-benzoyl hydroxylamines has been achieved with either Pd(II) or Pd(0) catalysts.Furthermore,we demonstrate that secondary amines can be directly used with benzoyl peroxide in a one-pot procedure that proceeds via the in situ generation of the appropriate O-benzoyl hydroxylamines.This catalytic reaction provides a new disconnection for the convergent synthesis of tertiary and secondary arylalkyl amines starting from benzoic acids.
Powder contg.benzoyl peroxide is readily wetted by contacting the powder with a liq.contg.water and one or more water-sol.org.solvents in a concn.sufficient to reduce the surface tension of the liq.to less than 64 dynes/cm.Benzoyl peroxide powder was wetted with a fluid comprising propylene glycol and water to facilitate the prepn.of a stable micronized suspension to be used in manufg.a 3.13% benzoyl peroxide topical gel.
C-H amination of N-aryl benzamides with O-benzoyl hydroxylamines has been achieved with either Pd(II) or Pd(0) catalysts.Furthermore,we demonstrate that secondary amines can be directly used with benzoyl peroxide in a one-pot procedure that proceeds via the in situ generation of the appropriate O-benzoyl hydroxylamines.This catalytic reaction provides a new disconnection for the convergent synthesis of tertiary and secondary arylalkyl amines starting from benzoic acids.
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