65185-33-3

Upstream product

• 106-48-9 4-chloro-phenol 
• 393-52-2 2-Fluorobenzoyl chloride 
• 85630-20-2 O-(4-chloro)phenyl N,N-diethylcarbamate 
• 394-47-8 2-fluorobenzonitrile 

Downstream Products

• 62665-81-0 C₁₇H₁₅ClFNO₃ 
• 13210-15-6 2-chloroxanthen-9-one 
• 65141-91-5 5-chloro-2'-fluoro-2-hydroxybenzhydrol 

Relevant academic research and scientific papers

Experimental and computational study of the 1,5-o → n carbamoyl snieckus-fries-type rearrangement

The reactions of o-lithiated O-aryl N,N-diethylcarbamates with different C-N multiple bond electrophiles have been thoroughly studied. A 1,5-O → N carbamoyl shift, a new variation of the anionic Fries-type rearrangement, takes place when nitriles, imines, or alkylcarbodiimides are employed. In these cases, the carbamoyl group plays a dual role as a directing group, building up a variety of functional groups through the 1,5-O → N carbamoyl migration. On the other hand, the use of iso(thio)cyanates and arylcarbodiimides led to non-rearranged o-functionalized Oarylcarbamates. This reactivity was further computationally explored, and the governing factor could be traced back to the relative basicity of the alternative products (migrated vs nonmigrated substrates). This exploration also provided interesting insights about the degree of complexation of the lithium cations onto these substrates. A new access to useful 2-hydroxybenzophenone derivatives has also been developed.

Synthesis of aryl ketones or ketimines by palladium-catalyzed arene C-H addition to nitriles

The unprecedented palladium-catalyzed C-H addition of arenes to nitriles provides moderate to excellent yields of aryl ketones or the corresponding hindered imines. The addition of a small amount of DMSO increases the yields dramatically. Both intermolecular and intramolecular reactions are successful, although the intramolecular reactions tend to be more sluggish. This novel chemistry is believed to involve palladium-catalyzed C-H activation of the arene by electrophilic aromatic substitution, followed by the unusual carbopalladation of a nitrile. Similar reactions have been successfully developed employing arylboronic acids and nitriles. A concise route to xanthones starting from cheap starting materials has been developed employing this synthetic protocol.

4-Phenyl-1,3-benzodioxans

Substituted 2-aminomethyl-4-phenyl-1,3-benzodioxans and derivatives thereof have been found to possess valuable anticonvulsant and antiarrhythmia activity in mammals. For example, cis-6-chloro-2-methylaminomethyl-4-phenyl-1,3-benzodioxan hydrochloride possesses potent anticonvulsant activity while cis-2-isopropylaminomethyl-4-phenyl-1,3-benzodioxan hydrochloride has potent antiarrhythmia activity.