蒽用固体氯化铜 (II) 选择性氯化,得到定量的 9-氯蒽。迄今为止提出的暂定反应机制未能解释一些其他烃同系物(例如萘和菲)对氯化铜 (II) 的非反应性。本研究表明,所有反应性烃类同系物的氧化半波电位 (E1⁄2ox) 均小于 1.26 V。基于这一发现,我们假设一个反应机制涉及从烃类到氯化铜 (II) 的一个电子转移.
Mild chlorination of aromatic compounds with tin(IV) chloride and lead tetraacetate
作者:Hussni A. Muathen
DOI:10.1016/0040-4020(96)00433-4
日期:1996.6
SnCl4/Pb(OAc)4 acts as a safe source of Cl2 for the chlorination of aromaticcompounds. A variety of aromaticcompounds are effectively chlorinated with SnCl4/Pb(OAc)4 under mild conditions. The mixture is a selective chlorinating agent, particularly with polyalkylbenzenes, polycyclic aromaticcompounds and anisoles.
Method and apparatus for inspecting photosensitive material for surface defects
申请人:FUJI PHOTO FILM CO., LTD.
公开号:US20030090653A1
公开(公告)日:2003-05-15
The surface defect inspection method and apparatus are capable of inspecting a photosensitive material for defective surface portions with efficiency by using a reflex-type optical sensor. The surface defect inspection apparatus has a reflex-type optical sensor. A thermal-developable photosensitive material is irradiated with inspection light from a light source. Reflected light from the photosensitive material is received by a light-receiving portion of the optical sensor and a defective surface portion is detected from the reflected light. A mask is attached to the light-receiving portion to cut out specular reflected light, thereby enabling a change in the quantity of diffuse reflected light to be directly detected. Therefore, even a defective surface portion where only a small diffuse reflectance is recognized can be detected with efficiency.