Some reactions of dieldrin and the proton magnetic resonance spectra of the products
作者:A. M. Parsons、D. J. Moore
DOI:10.1039/j39660002026
日期:——
bromide and with toluene-p-sulphonic acid, by mild hydrogenation, and by irradiation with ultraviolet light. Structures are proposed for all the compounds obtained, mainly by comparing their protonmagneticresonance spectra with those of similar compounds of known structure. The acids opened the epoxide ring, the anions entering the endo-position without molecular rearrangement. Hydrogenation first removed
Participation of Non-Conjugated Double Bonds inDiels-Alder Reactions. A kinetic study of the addition of tropone to norbornens
作者:H. R. Pfaendler、Hiroshi Tanida、Edwin Haselbach
DOI:10.1002/hlca.19740570213
日期:——
A kinetic study of Diels-Alder additions between norbornene derivatives acting as dienophiles and the dienes tropone, perchlorocyclopentadiene and 9,10-dimethylanthracene is presented. The results suggest that tropone thereby acts as an electron acceptor, classifying these reactions then as Diels-Alder additions with ‘inverse electron demand’.