| http://www.w3.org/ns/prov#value | - ion of compounds (6) and (7) in inert organic solvent, for example 1,2-dichloroethane, with or without acid, such as trifluoroacetic acid, and with or without stoichiometric amounts of water, for a period of one to 48 hours at 40???-90??? C. The product of Formula II is isolated and purified by conventional means.
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