prov:value
| - in each of Formulae Ia and II: R is a substituent on a carbon atom which can be the same or different at each occurrence and is selected from hydrogen, alkyl, aryl, heteroalkyl, heteroaryl, F, ???CN, ???OR1, ???CO2R1, ???C??H??F??, ???OC??H??F??, ???SR1, ???N(R1)2, ???P(R1)2, ???SOR1, ???SO2R1, ???NO2, and beta-dicarbonyls having Formula XII adjacent R groups together can form a 5- or 6-membered c
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