α-Nitroso-β-naphthol (1a) reacts with ylid-phosphoranes 3a-c to give the corresponding imines 4a-c. On the other hand, β-nitroso-α-naphthol (1b) undergoes deoxygenative dimerization by the same reagents to yield the azo-derivative 6. The appropriate symmetrically disubstituted ethylene 7 was also isolated and identified in each reaction. Structures 4, 6 and 7 were attested by compatible analytical and spectroscopic results.
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MAHRAN et al. (1988) studied this question.
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