56813-57-1

Upstream product

• 56813-55-9 2-(1,3-dioxo-1H-benzo[de]isoquinolin-2(3H)-yl)benzoic acid 
• 118-92-3 anthranilic acid 
• 81-84-5 1,8-Naphthalic anhydride 

Downstream Products

• 1379148-13-6 diethyl (7,13-dioxo-13,13a-dihydro-7H-benzo[de]indolo[2,1-a]isoquinolin-13a-yl)phosphonate 
• 1379148-15-8 diethyl 7-oxo-7H-benzo[de]indolo[2,1-a]isoquinolin-13-ylphosphate 
• 1379148-14-7 C₂₇H₃₁NO₉P₂ 
• 1379148-12-5 diethyl {2-(1,3-dioxo-1H-benzo[de]isoquinolin-2(3H)-yl)}benzoylphosphonate 

Relevant academic research and scientific papers

A novel approach to isoindolo[2,1-a]indol-6-ones

A convenient route to isoindolo[2,1-a]indol-6-ones has been developed starting from the appropriate 2-(N-phthaloyl)benzoic acids. Formation of the acid chlorides with thionyl chloride followed by heating with triethyl phosphite in a suitable solvent resulted in a multistep reaction giving tetracyclic β-ketophosphonates that on reduction with sodium borohydride gave the required indolones in good overall yields. Analogous β-ketophosphonates were also prepared starting with N,N-(1,8-naphthaloyl)-2-aminobenzoic acid and 2-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)benzoic acids although of these only the naphthaloyl product could be reduced with sodium borohydride without cleaving the amide bond in the ring system.

Helicity induction in a bichromophore: A sensitive and practical chiroptical method for absolute configuration determination of aliphatic alcohols

(equation presented) A practical method for the determination of the absolute configuration of aliphatic secondary alcohols, based on the circular dichroism of the readily available N-(1,8-naphthaloyl)-2-aminobenzoyl (NAB) derivative, is presented. The or