Photoamination of 2-Alkoxynaphthalenes with Alkylamines via Electron Transfer and Its Application to Synthesis of 1-Alkylamino-2-tetralones
Photoamination of 2-alkoxynaphthalenes (1) with ammonia and primary alkylamines were performed by irradiating an acetonitrile-water solution containing 1, an amine, and m-dicyanobenzene to give 1-alkylamino-2-alkoxy-1,4-dihydronaphthalene (2) in relatively good yields.The conversion of 2 to N-acetyl-1-alkylamino-2-tetralones was performed by acetylation with Ac2O by a treatment with BF3*OEt2.
A Convenient Method for Synthesis of 1-Amino-2-tetralones by Photoamination of 2-Alkoxynaphthalenes with Alkylamines
Irradiation of an acetonitrile-water solution containing 2-alkoxynaphthalene, an amine, and m-dicyanobenzene gave selectively 2-alkoxy-1-alkylamino-1,4-dihydronaphthalenes in relatively good yields. The aminodihydronaphthalenes were acetylated with Ac2O a