N-Alkylation of Phthalimide, Carboxamide, and Sulfonamides By Oxdation–Reduction Condensation Using Di-tert-butyl-1,4-benzoquinone and Alkyl Diphenylphosphinite
A traceless solid-phase synthesis of substituted phthalimides is proposed. The target compounds are obtained within minutes by a microwave-assisted cyclative cleavage in good yields and excellent purities.