Journal
JOURNAL OF HETEROCYCLIC CHEMISTRY
Volume 41, Issue 3, Pages 367-373Publisher
WILEY
DOI: 10.1002/jhet.5570410310
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By means of simple or domino ring-closure reactions of 1-(alpha-aminobenzyl)-2-naphthol (Betti base: 1), 1-aminomethyl-2-naplithol (2) and 2-(alpha-aminobenzyl)-1-naphthol (reverse Berri base: 3) with phosgene, ethyl benzimidate, 2-carboxybenzaldehyde, levulinic acid, salicylaldehyde/formalin or salicylaldehyde/acetaldehyde, naphth[1,2-e][1,3]oxazine and naphth[2,1-e][1,3]oxazine derivatives were prepared. All of the nitrogen-bridged polycyclic derivatives of 1 and 3 containing a number of centers of asymmetry were formed with nearly complete diastereoselectivity. Considerable differences were observed in the ring-closing abilities of the unsubstituted and phenyl-substituted aminonaphthols 1 and 2 and of the regioisomeric compounds 1 and 3.
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