| http://www.w3.org/ns/prov#value | - The compound of formula (G) is treated with a halogenating agent such as thionyl chloride to produce the compound of formula (H) and the product is treated with an acid acceptor such as a tertiary amine, specifically, 1,8-diazabicyclo(5,4,0)7-undecene, to produce the compound of formula (IIb).
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