Palladium- and light-enhanced ring-opening of oxiranes by copper chloride
摘要:
The yields of chlorohydrins formed by cleavage of epoxides by CuCl2 is increased in the presence of small amounts of PdCl2(MeCN)2. The conversion drops dramatically on carrying out the reaction in the dark. The regiochemistry of the ring-opening is sensitive to the nature of the substituents.
Palladium- and light-enhanced ring-opening of oxiranes by copper chloride
摘要:
The yields of chlorohydrins formed by cleavage of epoxides by CuCl2 is increased in the presence of small amounts of PdCl2(MeCN)2. The conversion drops dramatically on carrying out the reaction in the dark. The regiochemistry of the ring-opening is sensitive to the nature of the substituents.
Intramoleculer arylsulphoetherificatiom and lactonization of unsaturated alcohols and carboxylic acids initiated by anodic oxidation of disulphides
作者:Sabine Töteberg-Kaulen、Eberhard Steckhan
DOI:10.1016/s0040-4020(01)86141-x
日期:1988.1
disulphides. The reaction can either be initiated by indirect electrochemical oxidation of diphenyldisulphide using bromide as redox catalyst or preferably by direct anodic oxidation of bis(4-methoxyphenyl) disulphide. 5- and 6-membered thioaryl substituted ethers and lactones thus may be generated starting preferably from mono or disubatituted alkenols and alkenoic acids. The reaction occurs as a trans-addition
Palladium- and light-enhanced ring-opening of oxiranes by copper chloride
作者:Jacques Muzart、Abdelkhalek Riahi
DOI:10.1016/0022-328x(92)80158-t
日期:1992.7
The yields of chlorohydrins formed by cleavage of epoxides by CuCl2 is increased in the presence of small amounts of PdCl2(MeCN)2. The conversion drops dramatically on carrying out the reaction in the dark. The regiochemistry of the ring-opening is sensitive to the nature of the substituents.