127787-75-1

Upstream product

• 104-87-0 4-methyl-benzaldehyde 
• 868-85-9 Dimethyl phosphite 
• 77-78-1 dimethyl sulfate 
• 131302-80-2 α,α,α',α'-tetra-p-tolyl-α,α'-bis(dimethoxyphosphinyl)-p-xylene 
• 186581-53-3 diazomethane 
• 131302-82-4 α,α,α',α'-tetra(p-tolyl)-α,α'-bis(dihydroxyphosphinyl)-p-xylene 

Relevant academic research and scientific papers

PHOTOLYSIS OF DIPHOSPHONATE DERIVATIVES HAVING AROMATIC RING ASSEMBLIES

Upon UV-irradiation in methanol the diphosphonates fully substituted with aromatic rings give biaryls and aryl(dimethoxy)carbene derivatives in quantum yield of 0.01-0.03.The mechanism of the selective α,α-elimination of aryl groups was discussed.

Photolysis of triarylmethylphosphonic acids and their esters

Upon UV-irradiation in an alkaline alcohol solution, some triarylmethylphosphonic acids underwent C-P bond cleavage to give triarylmethanes and alkyl dihydrogenphosphates, while, in an acidic or a neutral alcohol solution, they afforded biaryls. Their dimethyl esters gave also biaryls and dimethyl [alkoxy(aryl)methyl]phosphonates, which were derived from the insertion of (dialkoxyphosphinyl) arylcarbenes into the OH bond of the alcohol. The carbene was generated by photo-α,α-elimination of two aryl groups of the phosphonate.