60367-15-9

Upstream product

• 30313-22-5 (2E,4E)-5-phenyl-1-p-tolylpenta-2,4-dien-1-one 
• 17507-57-2 (diphenylphosphinyl)phenyldiazomethane 
• 104-55-2 3-phenyl-propenal 
• 501-65-5 diphenyl acetylene 
• 4559-70-0 Diphenylphosphine oxide 
• 92-29-5 hydrobenzamide 
• 1499-21-4 Diphenylphosphinic chloride 
• 76202-74-9 N,N'-Bis-[(diphenyl-phosphinoyl)-phenyl-methyl]-C-phenyl-methanediamine 

Relevant academic research and scientific papers

Regioselective Single and Double Hydrophosphination and Hydrophosphinylation of Unactivated Alkynes

A lanthanum-based N,N-dimethylbenzylamine complex was used as a precatalyst for both hydrophosphination and hydrophosphinylation of alkynes under mild conditions. In the case of hydrophosphination, the catalyst induced monoaddition with high regiospecific

CARBENE - 23. PHOSPHENE: - UND -CYCLOADDITION VON (DIPHENYLMETHYLEN) PHENYLPHOSPHAN-OXID MIT α,β-UNGESAETTIGTEN KETONEN

The photolysis of 1 produces the carbene 2, which is transformed into the short lived phosphene 4 by phenyl migration.With the α,β-unsaturated ketones 6a-d in a cycloaddition 4 yields 1,2λ5-oxaphosphetanes 7a-d.The heterocycles partially undergo a photofragmentation, which produces the olefines 9a-d and the heterocumulene 8.If 4 is a generated form 1 under thermal conditions in the presence of 6a-c, formation of four membered rings and fragmentation is observed too; in addition 4 undergoes a -cycloaddition with the hetero-1,3-dienes 6a-c leading to 15a-c.This behaviour corresponds to that of the carbonylanalogue diphenylketene with 6a (formation of CO2 and 9a via the β-lactone 16 such as of 17)

Carbenes, 22. Phosphenes: Trapping Reactions of (Diphenylmethylene)phenylphosphane Oxide by -Cycloaddition with Aldehydes

The photolysis of (diazobenzyl)diphenylphosphane oxide (5) in benzene yields the short-lived (diphenylmethylene)phenylphosphane oxide (15) via the carbene 12.The heterocumulene is trapped by aromatic aldehydes, which are added to the reaction mixture, in a -cycloaddition reaction with formation of the 1,2λ5-oxaphosphetanes 16a-e.Carbene reactions with the solvent (formation of the norcaradiene 13) as well as with the trapping reagents (formation of the C/H-insertion products 10a and b) cannot be avoided.With the α,β-unsaturated aldehydes 22a-c, the 1,2λ5-oxaphosphetanes 23a-c are primarily formed.They undergo a complete or a partial photofragmentation to the 1,3-butadienes 24a-c and phenylphosphane dioxide (25).