A process is useful for making compounds of the formula: wherein R is hydro, methyl, or fluoro. Valuable intermediates in this process include: ##STR1## wherein R is hydro, methyl, or fluoro, and L is a leaving group.
这个过程有用于制造公式为:其中R是氢,甲基或
氟的化合物。这个过程中有价值的中间体包括:##STR1## 其中R是氢,甲基或
氟,而L是一个离去基团。