Unexpected behaviour of the oxidizing agent sodium  m ‐nitrobenzenesulfonate: Synthesis of a new class of 5‐hydroxy   benzopyrano‐[4,3‐ c ]pyridazin‐3(2 H )‐ones | Zendy

Cignarella Giorgio | Zendy; Barlocco Daniela | Zendy

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Unexpected behaviour of the oxidizing agent sodium m ‐nitrobenzenesulfonate: Synthesis of a new class of 5‐hydroxy benzopyrano‐[4,3‐ c ]pyridazin‐3(2 H )‐ones

Author(s) -

Cignarella Giorgio,

Barlocco Daniela

Publication year - 1995

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.5570320114

Subject(s) - chemistry , oxidizing agent , dehydrogenation , nitrobenzene , sulfonate , substrate (aquarium) , medicinal chemistry , sodium , stereochemistry , organic chemistry , catalysis , oceanography , geology

Sodium m ‐nitrobenzene sulfonate, widely used in dehydrogenation of 4,5‐dihydro‐3(2 H )‐pyridazinones to their corresponding aromatic derivatives, behaves in an unexpected way when 4,4a‐dihydro‐5 H [1]benzopyrano[4,3‐ c ]pyridazin‐3(2 H )‐ones are employed as substrate. The synthesis of a new class of 5‐hydroxy[1]benzopyrano[4,3‐ c ]pyridazin‐3(2 H )‐ones is described.

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