HZ Naturforsch., B 1967, 22, 1223, 1224, 1225.(10)(a) All compounds were fully characterized by spectroscopic methods, and for new compounds correct combustion or high-resolution mass spectral analyses were also obtained.(b) The unusually low isolated yields for these adducts are primarily due to their sensitivity toward light, acid, and thermally induced polymerization.(c) Dodson, RM; Srinivasan, V.; Sharma, K. S;