Phenylhydrazine hydrochloride 3-Phenylhydroxylamine

Indolomorphinans can be prepared from their 6-ketomorphinan precursors via Fischer indole synthesis with phenylhydrazine hydrochloride in glacial acetic acid [43, 49, 50], while benzofuromorphinans can be synthesized from the corresponding 6-ketomorphinans using O-phenylhydroxylamine hydrochloride and methanesulfonic acid in MeOH (Scheme 8) [43]. 

Replacing phenylhydrazine by an O-arylhydroxylamine derivative (p. 511) leads to benzofurans phenylhydroxylamine hydrochloride and a ketone may be similarly cyclized in acetic acid-sulphuric acid or in 98% sulphuric acid. 

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See also in sourсe #XX -- [ , ]

See also in sourсe #XX -- [ , ]

See also in sourсe #XX -- [ , ]

See also in sourсe #XX -- [ , ]

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