| http://www.w3.org/ns/prov#value | - halogenating agent to obtain a compound of formula QUIN-1: or (c) when X??? is an SO2R group, R is C1-6alkyl, C6 or C10 aryl or heteroaryl, either: (1) treating a compound of formula 7 with a halogenating agent to obtain a compound of formula QUIN-1 and then reacting compound QUIN-1 with a sulfinate salt RSO2M, where R is as defined previously and M is an alkali metal, to obtain a compound of for
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