prov:value
| - An alternate route for accomplishing the conversion of compounds of formulas I, Ia, V, VI, VII, VIII, XII, XIII, XVI, XVII, XVIII and XIX wherein R1, R2, R3 or R4 is halo or hydroxyl to compounds of formulas I, Ia, V, VI, VII, VIII, XII, XIII, XVI, XVII, XVIII and XIX, respectively, wherein R1, R2, R3 or R4 is other than hydrogen, halo or hydroxy entails first conversion of R1, R2, R3 or R4 from a
|