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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.
以水和一种或多种水溶胶有机溶剂混合,形成浓度足于将液体表面张力降至每平方厘米64达因的液体,将含有过氧化苯甲酰的粉末湿润.将过氧化苯甲酰粉末用含有丙二醇与水的液体加以润湿,以便制备一种稳定的微粒悬浮体来用于制造含3.13%过氧化苯甲酰的外用凝胶.
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.
N-芳基苯甲酰胺与O-苯甲酰羟胺的碳氢胺化是添加Pd(II) 或 Pd(0)催化剂来实现.此外,我们演示二级胺可以直接用于过氧化苯甲酰进行一锅反应工序,通过原位生成适宜的O-苯甲酰羟胺.这种催化反应从苯甲酸开始,为三级和二级芳烷基胺的收敛合成提供一种新的断接.
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