74805-32-6

Upstream product

• 136918-14-4 phthalimide 
• 611-19-8 1-chloro-2-(chloromethyl)benzene 
• 85-44-9 phthalic anhydride 
• 89-97-4 2-CHLOROBENZYLAMINE 
• 1074-82-4 potassium phtalimide 
• 118-29-6 2-(hydroxymethyl)-1H-isoindole-1,3(2H)-dione 
• 108-90-7 chlorobenzene 

Downstream Products

• 88-99-3 benzene-1,2-dicarboxylic acid 
• 1138735-12-2 3-(2-chlorophenyl)isoquinoline 
• 612-14-6 phthalyl alcohol 
• 89-97-4 2-CHLOROBENZYLAMINE 

Relevant academic research and scientific papers

Alkoxide-Catalyzed Hydrosilylation of Cyclic Imides to Isoquinolines via Tandem Reduction and Rearrangement

An alkoxide-catalyzed hydrosilylation of cyclic imides to isoquinolines was realized via tandem reduction and rearrangement. Using TMSOK as the catalyst and (EtO)2MeSiH as the reductant, a series of cyclic imides containing different functional groups were reduced to the corresponding 3-aryl isoquinolines in moderate to good yields. The scenario of the reaction pathway was supposed to involve the reduction of imides to ω-hydroxylactams, which underwent rearrangement in the presence of a base catalyst, and then the carbonyl reduction, followed by siloxy elimination.

COMPOSITIONS FOR PROMOTING READTHROUGH OF PREMATURE TERMINATION CODONS, AND METHODS OF USING THE SAME

Disclosed are compounds of general formula (I) that promote readthrough of a premature termination codon (PTC) of an RNA molecule in a translation system, and their use, alone or in combination with other compounds, such as aminoglycoside, to treat diseases or disorders ameliorated by modulation of a premature termination codon (PTC) of an RNA molecule in a translation system. The disorder or disease may be Dystrophic epidermolysis bullosa, Batten disease, Duchenne muscular dystrophy, cancer, and spinal muscular atrophy. Ar-L-B (I)

Superelectrophilic Tscherniac amidomethylation of aromatics with N-hydroxymethylphthalimide in trifluoromethanesulfonic acid

N-Hydroxymethylphthalimide in trifluoromethanesulfonic acid (triflic acid) reacts readily at room temperature with benzene, halo-, polyhalo- and halonitrobenzenes to give high yields of the corresponding α-amidomethylated products. The scope of the α-amidomethylation reaction is substantially extended by the studied system, which is considered to involve diprotonated N-hydroxymethylphthalimide as the de facto superelectrophilic reagent.

Preparing 2-chlorobenzylamine from 2-chlorobenzylchloride via 2-chlorobenzylphthalimide

2-Chlorobenzylamine is prepared from 2-chlorobenzylchloride in a two-step process. In the first step, 2-chlorobenzylchloride is reacted with alkali metal phthalimide, preferably formed in situ from potassium carbonate and phthalimide, to form the novel intermediate 2-chlorobenzylphthalimide. In the second step, the phthalimide ring of the 2-chlorobenzylphthalimide is cleaved to form 2-chlorobenzylamine. The first step is preferably carried out in an unreactive solvent at 60° C. to reflux temperature, for example, for 1 to 10 hours. The solvent is very preferably dimethylformamide which is advantageously recovered and used again as solvent in the conversion of 2-chlorobenzylchloride to 2-chlorobenzylphthalimide. The second step consists essentially, for example, of hydrazinolysis or hydrolysis. When the second step consists essentially of hydrazinolysis, the 2-chlorobenzylphthalimide is reacted with hydrazine to form 2-chlorobenzylamine and phthalylhydrazide, and the 2-chlorobenzylamine is separated by reacting with acid to form soluble amine salt, filtering out the phthalylhydrazide and then reacting the amine salt with base to convert it to the free amine. When the second step consists essentially of hydrolysis, the hydrolysis can be carried out in one step with alkali metal hydroxide or inorganic acid or in two steps, for example, with hydrolysis with alkali metal hydroxide followed by hydrolysis with inorganic acid. The hydrolysis is suitably carried out at temperatures of 60° C. to reflux temperature utilizing base and acid strengths ranging from 5% to saturated. Preferred hyrdolyzing agents are 40-60% aqueous KOH for one step base hydrolysis, 40-60% aqueous sulfuric acid for one step acid hydrolysis and 10-30% aqueous KOH followed by a mixture of water and concentrated HCl in a volume ratio ranging from 0.5:1 to 2:1 for the two-step base/acid hydrolysis. A second step consisting essentially of hydrolysis is preferred over a second step consisting essentially of hydrazinolysis not only for safety reasons but also because phthalic acid or a mixture of this with 2-chlorobeznylphthalamic acid can be recovered as by-product or by-product derivative which, contrary to the hydrazinolysis by product, phthalylhydrazide, are readily, respectively, converted to phthalimide and 2-chlorobenzylphthalimide by reaction with concentrated aqueous ammonium hydroxide. The phthalimide is useful in the in situ reaction in the first step to form 2-chlorobenzylphthal-imide. 2-Chlorobenzylphthalimide which is introduced with phthalimide into said first step becomes part of the product of the first step.

Heterocycles in Organic Synthesis. Part 42. Preparation of Azides, Phthalimides, and Sulphonamides from Primary Amines

N-Alkyl and N-benzyl substituents are displaced from 2,4,6-triphenylpyridinium cations by nucleophilic azide, phthalimide, succinimide, and sulphonamide anions.This enables the conversion of primary alkyl- and benzylamines into azides, and primary (with potential for inversion or labelling) and secondary amines.