Studying the reactivity of (phthalazin-1(2H)-on-2-yl)methyl trichloroacetimidate towards different C- and O-nucleophiles

A simple and efficient synthesis of phthalazin-1(2H)-one 2-substituted derivatives is achieved in very good yields via reaction of a phthalazinone–trichloroacetimidate with various C- and O-nucleophiles such as aromatic, heteroaromatic and olefinic reagents, sugars and cholesterol in CH2Cl2 in the presence of a catalytic amount of trimethylsilyl trifluoromethanesulfonate (TMSOTf).