Synthesis and  1 H‐NMR spectra of halogenated spiro[isobenzofuran‐1(3 H ),9′(9 H )‐6′‐(methylcyclohexylamino)‐3′‐methyl‐2′‐anilinoxanthene]‐3‐ones | Zendy

Nakazumi Hiroyuki | Zendy; Kitao Teijiro | Zendy; Ohnishi Katsuaki | Zendy

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Synthesis and 1 H‐NMR spectra of halogenated spiro[isobenzofuran‐1(3 H ),9′(9 H )‐6′‐(methylcyclohexylamino)‐3′‐methyl‐2′‐anilinoxanthene]‐3‐ones

Author(s) -

Nakazumi Hiroyuki,

Kitao Teijiro,

Ohnishi Katsuaki

Publication year - 1988

Publication title -

journal of heterocyclic chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.321

H-Index - 59

eISSN - 1943-5193

pISSN - 0022-152X

DOI - 10.1002/jhet.5570250530

Subject(s) - isobenzofuran , chemistry , proton nmr , proton , carbon 13 nmr , medicinal chemistry , stereochemistry , physics , quantum mechanics

Reaction of spiro[isobenzofuran‐1(3 H ).9′(9 H )‐6′‐(methylcyclohexylamino)‐3′‐methyl‐2′‐anilinoxanthene]‐3‐one ( 1 ), which is typical leuco fluoran dye, with N ‐bromosuccinimide and N ‐chlorosuccinimide leads to halogenated derivatives 2a–2c and 3 , respectively. Their structures were established by two‐dimensional proton‐proton (COSY) experiment and their thermal properties examined by means of DSC and compared with commercially available 1 .

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