prov:value
| - 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, ???SO2R1, ???NO2, and beta-dicarbonyls having Formula XII shown in FIG. 12 and as further described below under ???Formula XII???; or adjacent R groups toget
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