Bridged Polycyclic Compounds. XXXII. The Proton Magnetic Resonance Spectra of Some Dibenzobicyclo[2.2.2]octadienes¹

Addition of thianthrene cation radical to non-conjugated dienes—Part I: Addition to one double bond

“…Table 2 shows assignments of δ (J ) for each remaining double bond (H a , H b , H c ) and the three protons of the former double bond (H d , H e , H f ). The smaller J (5.0-5.8 Hz) for the trans (threo) protons H d and H e and the larger J (7.9-8.8 Hz) for the cis (erythro) protons H d and H f are consistent with data for analogous rigid systems [19,[23][24][25]. The consistency of δ ( 13 C) for the four adducts (table 3) is notable.…”

Alkaline hydrolyses of p-nitrophenyl esters in the presence of polyelectrolytes

“…Thus, the cationic, hydrophobic polymer promotes the hydrolysis. Similar findings were observed for ester hydrolysis by using polysulfonic acid,4 micelle-forming cationic detergents of various hydrophobicities,7•8 and polyethylenimine derivatives.9,10 Second, hydrophobic polyelectrolyte was effective (7) . T. A. Behme, J. G. Fullington, R. Noel, and E. H. Cordes, J. Amer.…”

“…Clearly, system 1 can be incorporated only into flat, rigid rings and extensive systematic studies have so far been confined to hexachlorobicyclo-[2.2.1 [heptenes (2)2a and their 7,7-difluoro derivatives,213 1,1 ,dichlorocyclopropanes (3),3 oxiranes (4),3 cyclopropanes (5),4,5 and norbornenes (6). 6 A fairly large collection of data is also available7 for dibenzobicyclo-[2.2.2]octadienes (7), and some general studies dealing with the effects of substituents on coupling constants8 are pertinent.…”

Diastereoselective hydrogenation of a cyclic β-ketoformyl derivative on supported metal catalysts

“…Hydrogenation of 9,10-dihydro-12-hydroxymethylene-9,10-ethanoanthracene-11-one. [10,11]. By analogy, we attributed this diastereoisomer to the cis isomer 4a.…”