Arylaldoxime dehydrodimers 3a—1 have been prepared from the corresponding oximes 1a—1 by using (HCrO_4)_2(Py)_4Co as oxidant.Their structures were assigned to be bisnitrone by XPS studies. ESR studies of 3a—1 in ho...Arylaldoxime dehydrodimers 3a—1 have been prepared from the corresponding oximes 1a—1 by using (HCrO_4)_2(Py)_4Co as oxidant.Their structures were assigned to be bisnitrone by XPS studies. ESR studies of 3a—1 in hot chloroform show that iminoxy radicals 2a—1 are formed.Therefore the dehydrodimers can provide a convenient source of these radicals.展开更多
The addition reaction of p chlorobenzaldoxime dehydrodimer and 1,3 dienes in refluxing chloroform gives linear 1,4 addition products. The reaction is probably a free radical process.
文摘Arylaldoxime dehydrodimers 3a—1 have been prepared from the corresponding oximes 1a—1 by using (HCrO_4)_2(Py)_4Co as oxidant.Their structures were assigned to be bisnitrone by XPS studies. ESR studies of 3a—1 in hot chloroform show that iminoxy radicals 2a—1 are formed.Therefore the dehydrodimers can provide a convenient source of these radicals.
文摘The addition reaction of p chlorobenzaldoxime dehydrodimer and 1,3 dienes in refluxing chloroform gives linear 1,4 addition products. The reaction is probably a free radical process.
