Synthese neuer N, N,1,1-Tetramethyl-isobenzofuranamine
摘要:
The nitrophthalides 3 a - d aimed as intermediates in the synthesis of the title compounds 6 a - d were obtained via regioselective reduction of 3-nitro-phthalic anhydride 1 or by nitration of phthalide and 3,3-dimethylphthalide, respectively. Reductive methylation of the nitro groups afforded the dimethylaminophthalides 5 a - d which in turn were reacted with MeMgI or in the case of 5 d reduced by LiAlH4 leading finally to the title compounds.
Synthese neuer N, N,1,1-Tetramethyl-isobenzofuranamine
摘要:
The nitrophthalides 3 a - d aimed as intermediates in the synthesis of the title compounds 6 a - d were obtained via regioselective reduction of 3-nitro-phthalic anhydride 1 or by nitration of phthalide and 3,3-dimethylphthalide, respectively. Reductive methylation of the nitro groups afforded the dimethylaminophthalides 5 a - d which in turn were reacted with MeMgI or in the case of 5 d reduced by LiAlH4 leading finally to the title compounds.