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Reaction of Dihydrodiazaphosphinines with Acetylenic Diesters: A Direct Synthesis of the λ5-Diazaphosphaazulene Skeleton

✍ Scribed by José Barluenga; Miguel Tomás; Klaus Bieger; Santiago García-Granda; Rafael Santiago-García

Book ID
101276263
Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
321 KB
Volume
1998
Category
Article
ISSN
1434-193X

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✦ Synopsis

1,2-Dihydro-1,3,2-diazaphosphinine 2 reacts with acetylene-dimethyl acetylenedicarboxylate. A reaction pathway is proposed based primarily on i) the isolation and characterization dicarboxylic acid esters to give chemoselectively the adducts 5 or 6a, b, depending on the reaction conditions. Compound of intermediate 8(8Ј) and ii) the reactivity of 3(3Ј) towards electrophiles, in particular with tetracyanoethylene (com-6a is alternatively synthesized by treatment of equimolecular amounts of the previously described monoadduct 3(3Ј) and pound 10).

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