Meso‐ionic compounds. XI , photochromic 4‐halogeno‐3‐(3‐pyridyl)sydnones | Zendy

Greco Claude V. | Zendy; Mehta Jitendra R. | Zendy

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Meso‐ionic compounds. XI , photochromic 4‐halogeno‐3‐(3‐pyridyl)sydnones

Author(s) -

Greco Claude V.,

Mehta Jitendra R.

Publication year - 1979

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.5570160544

Subject(s) - chemistry , sydnone , photochromism , trifluoroacetic anhydride , chloroform , halogenation , medicinal chemistry , yield (engineering) , ionic bonding , organic chemistry , polymer chemistry , photochemistry , ring (chemistry) , materials science , metallurgy , ion

Halogenation of 3‐(3‐pyridyl)sydnone with N ‐halosuccinimides in chloroform afforded the 4‐halogeno‐3‐(3‐pyridyl)sydnones where X = CI, Br, I. The 4‐chloro‐ and 4‐bromopyridylsydnones were photochromic. 3‐(3‐Pyridyl)sydnone was obtained in both high yield and purity by dehydration of N ‐nitroso‐ N ‐(3‐pyridyl)glycine with trifluoroacetic anhydride.

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