A method comprising reacting the XVb molecule (where R4 is H) with diphenyl phosphoryl azide in tbutanol as a solvent in the presence of a base to form the XVIIc molecule ** Formula ** where: (a) R4 is F, Cl, Br, I, CN, NO2, substituted or unsubstituted C1-C6 alkyl, substituted or unsubstituted C2-C6 alkenyl, substituted or unsubstituted C1-C6 alkoxy, substituted or unsubstituted C2-C6 alkenyloxy, substituted or substituted C3-C10 cycloalkyl unsubstituted, substituted or unsubstituted C3-C10 cycloalkenyl, substituted or unsubstituted C6-C20 aryl, substituted or unsubstituted C1-C20 heterocyclyl, OR9, C (>； = X1) R9, C (>； = X1) OR9, C ( >； = X1) N (R9) 2, N (R9) 2, N (R9) C (>； = X1) R9, SR9, S (O) nOR9 or R9S (O) nR9, where each said R4, which is substituted, it has one or more substituents selected from F, Cl, Br, I, CN, NO2, C1-C6 alkyl, C2-C6 alkenyl, C1-C6 haloalkyl, C2-C6 haloalkenyl, C1-C6 haloalkyloxy, C2-C6 haloalkyloxy , C3-C10 cycloalkyl, C3-C10 cycloalkenyl, C3-C10 halocycloalkyl, C3-C10 halocycloalkenyl, OR9, S (O) nOR9, C6-C20 aryl or C1-C20 heterocyclyl, (each of which may be substituted, may optionally be substituted with R9)； (b) R9 (each independently) is H, CN, substituted or unsubstituted C1-C6 alkyl, substituted or unsubstituted C2-C6 alkenyl, substituted or unsubstituted C1-C6 alkoxy, substituted or unsubstituted C2-C6 alkenyloxy, C3-C10 substituted or unsubstituted, substituted or unsubstituted C3-C10 cycloalkenyl, substituted or unsubstituted C6-C20 aryl, substituted or unsubstituted C1-C20 heterocyclyl, S (O) C1-C6 alkyl, N (C1-C6 alkyl ) 2, wherein each said R9, which is substituted, has one or more substituents selected from F, Cl, Br, I, CN, NO2, C1-C6 alkyl, C2-C6 alkenyl, C1-C6 haloalkyl, C2- haloalkenyl C6, C1-C6 haloalkyloxy, C2-C6 haloalkenyloxy, C3-C10 cycloalkyl, C3-C10 cycloalkenyl, C3-C10 halocycloalkyl, C3-C10 halocycloalkenyl, C1-C6 alkyl, C1-C6 ohaloalkyl, S (O) nalkyl , S (O) n C1-C6 alkyl, C6-C20 aryl or C1-C20 heter
