112921-25-2

Upstream product

• 111220-58-7 3,3'''-dimethyl-2',2'',4'',6'-tetranitro-5,5'''-t-butylquaterphenyl 
• 112921-20-7 3,3'''-dimethyl-2',6',2'',4''-tetranitro-5,5'''-di-t-butyl-(m-quaterphenyl-2,2'''-diyldimethyl) diacetate 
• 112921-19-4 2,2'''-bis(chloromethyl)-3,3'''-dimethyl-2',2'',4'',6'-tetranitro-5,5'''-di-t-butyl-m-quaterphenyl 
• 112945-44-5 1,1'-dimethyl-5,5'-dinitro-3,3'-di-t-butyl-10H,10'H-9,9'-dioxa-6,6'-biphenanthrenyl 
• 112921-30-9 C₃₆H₃₇O₄P 
• 112921-21-8 1,1'-dimethyl-3,3'-di-t-butyl-10H,10'H-9,9'-dioxa-6,6'-biphenanthrenyl-5,5'-diamine 
• 112945-45-6 5,5'-di-iodo-1,1'-dimethyl-3,3'-di-t-butyl-10H,10'H-9,9'-dioxa-6,6'-biphenanthrenyl 
• 112921-24-1 Methyl 4,13-dimethyl-2,15-di-tert-butyl-17-methoxy-17-oxo-5H,12H,17H-17λ⁵-phospholo<2,3:3,4;5,4:3',4'>dibenzo<1,2-c:1',2'-c'>bis<2>benzopyran 

Downstream Products

• 186776-81-8 meso-4,6-Bis(2-dimethoxyphosphorylmethyl-3-methyl-5-tert-butylphenyl)-5-methoxy-5-oxo-5H-5λ⁵-dibenzophosphole-3,7-diyl diacetate 
• 186706-96-7 (4-tert-Butyl-2-{6-[5-tert-butyl-2-(dimethoxy-phosphorylmethyl)-3-methyl-phenyl]-3,7-dihydroxy-5-methoxy-5-oxo-5H-5λ⁵-dibenzophosphol-4-yl}-6-methyl-benzyl)-phosphonic acid dimethyl ester 
• 186706-98-9 {4-tert-Butyl-2-[6-[5-tert-butyl-2-(dimethoxy-phosphorylmethyl)-3-methyl-phenyl]-3,7-bis-(diethoxy-phosphorylmethoxy)-5-methoxy-5-oxo-5H-5λ⁵-dibenzophosphol-4-yl]-6-methyl-benzyl}-phosphonic acid dimethyl ester 
• 112921-26-3 meso-4,6-Bis(2-bromomethyl-3-methyl-5-tert-butylphenyl)-5-methoxy-5-oxo-5H-5λ⁵-phosphole-3,7-diyl diacetate 

Relevant academic research and scientific papers

Synthesis of substituted dibenzophospholes. Part 9. Preparation of two water-soluble phosphinic-polyphosphonic acids

Several improvements, including a generally applicable method for reduction of aromatic nitro compounds to amines, were made to the preparation from 2,2′,4,4′-tetranitrobiphenyl of the meso atropisomer 1 of a bis-phosphonomethylated 4,6-diaryldibenzophosphole 5-oxide, previously obtained in impure form.2 A concomitant product 12 containing one phosphonomethyl group was formed by a novel intramolecular displacement. Both products were converted by a specially developed method3 into crystalline phosphinic-polyphosphonic acids, containing respectively four and three phosphonomethyl groups, which formed stable monodisperse solutions in water at pH 2-4. These solutions catalysed the hydration of 2-methylpropene to fert-butyl alcohol somewhat more efficiently than a toluene-4-sulfonic acid solution of equivalent acidity.

Synthesis of Substituted Dibenzophospholes. Part 7. Regiospecific Synthesis of 4,6-Diaryl-3,7-dioxydibenzophospholes from 2,2',4,4'-Tetranitrobiphenyl

3,3'''-Dimethyl-2',2'',4'',6'-tetranitro-5,5'''-di-t-butyl-m-quaterphenyl did not undergo selective alkoxydenitration at the 2' and 4'' positons, but when acetoxymethyl groups were placed at the 2 and 2''' positions, treatment with sodium methoxide caused