Synthesis of unsymmetrical cage phosphonates from heterocyclic systems based on 2H-1,2-benzoxaphosphinine

General method for reaction compound 1 with phenyl phosphorus halides: Synthesis of 2-aryl-3-benzoyl-4-hydroxy-2H-1,2-benzoxaphosphinines 2-4. P,P-Dichlorophenylphosphine, phenyl phosphonic dichloride and phenyl phosphorodichloridate (5 mmol) was added individually to a solution of compound 1 (5 mmol, 1.20 g) in dry toluene (30 mL) in the presence of triethylamine (10 mmol, 1.4 mL) as a base, under stirring for 30 minutes at 10 o C then heated under reflux for 8-12 hours. The formed solids were filtered off, washed with water and crystallized from diluted EtOH. 3-Benzoyl-4-hydroxy-2-phenyl-2H-1,2-benzoxaphosphinine (2). Orange solid in 59% yield;

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New intramolecular cyclization of 2H-benzo[e]-1,2-oxaphosphorinine derivatives—a way to the synthesis of unsymmetrical cage phosphonates

Zalaltdinova

Sadykova

Smailov

et al. 2021

Phosphorus, Sulfur, and Silicon and the Related Elements

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Synthesis of unsymmetrical cage phosphonates from heterocyclic systems based on 2H-1,2-benzoxaphosphinine

Cited by 8 publications

References 12 publications

Synthesis of new aminomethylated phosphaneoflavonoid derivatives

Synthesis of new aminomethylated phosphaneoflavonoid derivatives

Reaction of 1-(2-hydroxyphenyl)-3-phenylpropane-1,3-dione with some phosphorus halides: A simple synthesis of novel 1,2-benzoxaphosphinines

New intramolecular cyclization of 2H-benzo[e]-1,2-oxaphosphorinine derivatives—a way to the synthesis of unsymmetrical cage phosphonates

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