Compound number

Spectral 13C NMR data

1a

δ, 19 (s, C, CH₃), 81 (s, C3, Ar), 118 (s, C, CN), 184 (s, C2, -C-O), 163 (s, C4,), 108 (s, C5, Ar-), 165 (s, C6, Ar-), 111 (s, C1’, Ar’), 119 (s, C3’, Ar’), 114 (s, C2’, Ar’), 118 (C, CN’) 164 (s, C4’, Ar’), 119 (s, C5’, Ar’), 130 (s, C6’, Ar’),

1b

δ, 19 (s, C, CH₃), 81 (s, C3, Ar), 118 (s, C, CN), 180 (s, C2, -C-O), 157 (s, C4,), 105 (s, C5, Ar-), 164 (s, C6, Ar-), 128 (s, C1’, Ar’), 130 (s, C3’, Ar’), 128 (s, C2’, Ar’) 124 (s, C4’, Ar’), 154 (s, C5’, Ar’), 128 (s, C6’, Ar’),

1c

δ, 19 (s, C, CH₃), 81 (s, C3, Ar), 118 (s, C, CN), 184 (s, C2, -C-O), 157 (s, C4,), 108 (s, C5, Ar-), 165 (s, C6, Ar-), 111 (s, C1’, Ar’), 103 (s, C3’, Ar’), 148 (s, C2’, Ar’) 164 (s, C4’, Ar’), 106 (s, C5’, Ar’), 131 (s, C6’, Ar’),