A new access to substituted tetraethyl N-Boc 2-aminoethylidene-1,1-bisphosphonates and phosphonyl-substituted aza-Morita-Baylis-Hillman-type adducts
Keywords: Bisphosphonates; Nucleophilic addition; N-Boc imines; α-Amidosulfones; Aza-Morita-Baylis-Hillman-type adducts;