1470-43-5

Upstream product

• 105279-27-4 3-(3-bromobenzylidene)-3H-isobenzofuran-1-one 
• 87-41-2 2-benzofuran-1(3H)-one 
• 3132-99-8 m-bromobenzoic aldehyde 

Downstream Products

• 420846-68-0 4-(3-bromobenzyl)phthalazin-1(2H)-one 
• 1062287-14-2 C₂₉H₂₂N₂O₃ 

Relevant academic research and scientific papers

INDANONE AND INDANDIONE DERIVATIVES AND HETEROCYCLIC ANALOGS

The invention relates to indanone/indandione derivatives and heterocyclic analogs of Formula (I) wherein Ar1, A, B, L1, Y, Z, and (R1)n n are as described in the description; to pharmaceutically acceptable salts thereof, and to the use of such compounds as medicaments, especially as NPS receptor antagonists.

PHTHALAZINONE DERIVATIVES

A compound of the formula (I) wherein: A and B together represent an optionally substituted, fused aromatic ring or an optionally substituted, fused cyclohexene ring; D is selected from: (i), where Y1 is selected from CH and N, Y2 is selected from CH and N, Y3 is selected from CH, CF and N and Y4 is selected from CH and N; (ii) where Y1is selected from CH and N and Y2 is selected from CH and N; (iii) and where Q is O or S; and (iv), where Q is O or S; and RD is an optionally substituted C5-20 aryl group, bound to D by a carbon-carbon bond.

Reactions of Carbonyl Compounds in Basic Solutions. Part 9. Methoxide-catalysed Cyclization of Benzylidenephthalides and Methyl o-Phenylacetylbenzoates

The detailed mechanism of the methoxide-catalysed rearrangement of substituted benzylidenephthalides and both normal and pseudo methyl o-phenylacetylbenzoates to form 2-phenylindane-1,3-diones has been studied.A rate-acidity function correlation for the reactions in methanolic dimethyl sulphoxide (DMSO) shows a linear increase in rate with increasing H- to reach a maximum in rate before decreasing, except for the p-nitro substrate.This derivative shows a rate decrease throughout the H- range.The ρ values in methanol and in 94 mol percent methanolic DMSO are 1.7 and -1.6, respectively.The kinetic isotope effect has been observed with kH/kD 0.8-1.0.The equilibrium constants for ring-chain tautomerism of the methyl o-phenylacetylbenzoates have been determined and shown to be independent of substituent and solvent composition.The rate-determining step is the intramolecular attack of the anion of the normal ester on the ester carbonyl group.In methanol and methanolic DMSO of high methanol content this is preceded by the ionization equilibrium of the normal ester.In methanolic DMSO of low methanol content and for the p-nitro substrate, the initial state is the anion itself.