| http://www.w3.org/ns/prov#value | - In another example of an interconversion process, compounds of formula (1) wherein R7 is an alkyl group, may be prepared by interconversion of a compound of formula (1) where R7 is a hydrogen atom by reaction with a compound R7 L, where L is a leaving group, for example a halogen atom, such as chlorine, in the presence of a base, for example lithium diisopropylamide, in a solvent such as tetrahydr
|
