Patent ID: 6858744

Claim:
A method of making a compound of the formula (IIIa1-1) wherein: R 2 is phenyl-(CH 2 ) m —, naphthyl-(CH 2 ) m —, (C 3 -C 10 )cycloalkyl-(CH 2 ) m —, (C 1 -C 6 )alkyl or (C 2 -C 9 )heteroaryl-(CH 2 ) m —, wherein each of said phenyl, naphthyl, (C 3 -C 10 )cycloalkyl or (C 2 -C 9 )heteroaryl moieties of said phenyl-(CH 2 ) m —, naphthyl-(CH 2 ) m —, (C 3 -C 10 )cycloalkyl-(CH 2 ) m — or (C 2 -C 9 )heteroaryl-(CH 2 ) m — groups may optionally be substituted with one, two, or three substituents independently selected from the group consisting of hydrogen, halogen, CN, (C 1 -C 6 )alkyl, hydroxy, hydroxy-(C 1 -C 6 )alkyl, (C 1 -C 6 )alkoxy, (C 1 -C 6 )alkoxy(C 1 -C 6 )alkyl, HO—(C═O)—, (C 1 -C 6 )alkyl-O—(C═O)—, HO—(C═O)—(C 1 -C 6 )alkyl, (C 1 -C 6 )alkyl-O—(C═O)—(C 1 -C 6 )alkyl, (C 1 -C 6 )alkyl-(C═O)—O—, (C 1 -C 6 )alkyl-(C═O)—O—(C 1 -C 6 )alkyl, H(O═C)—, H(O═C)—(C 1 -C 6 )alkyl, (C 1 -C 6 )alkyl(O═C)—, (C 1 -C 6 )alkyl(O═C)—(C 1 -C 6 )alkyl, NO 2 , amino, (C 1 -C 6 )alkylamino, [(C 1 -C 6 )alkyl] 2 amino, amino(C 1 -C 6 )alkyl, (C 1 -C 6 )alkylamino(C 1 -C 6 )alkyl, [(C 1 -C 6 )alkyl] 2 amino(C 1 -C 6 )alkyl, H 2 N—(C═O)—, (C 1 -C 6 )alkyl-NH—(C═O)—, [(C 1 -C 6 )alkyl] 2 N—(C═O)—, H 2 N(C═O)—(C 1 -C 6 )alkyl, (C 1 -C 6 )alkyl-HN(C═O)—(C 1 -C 6 )alkyl, [(C 1 -C 6 )alkyl] 2 N—(C═O)—(C 1 -C 6 )alkyl, H(O═C)—NH—, (C 1 -C 6 )alkyl(C═O)—NH, (C 1 -C 6 )alkyl(C═O)—[NH](C 1 -C 6 )alkyl, (C 1 -C 6 )alkyl(C═O)—[N(C 1 -C 6 )alkyl](C 1 -C 6 )alkyl, (C 1 -C 6 )alkyl-S—, (C 1 -C 6 )alkyl-(S═O)—, (C 1 -C 6 )alkyl-SO 2 —, (C 1 -C 6 )alkyl-SO 2 —NH—, H 2 N—SO 2 —, H 2 N—SO 2 -(C 1 -C 6 )alkyl, (C 1 -C 6 )alkylHN—SO 2 -(C 1 -C 6 )alkyl, [(C 1 -C 6 )alkyl] 2 N—SO 2 —(C 1 -C 6 )alkyl, CF 3 SO 3 —, (C 1 -C 6 )alkyl-SO 3 —, phenyl, phenoxy, benzyloxy, (C 3 -C 10 )cycloalkyl, (C 2 -C 9 )heterocycloalkyl, and (C 2 -C 9 )heteroaryl; and m is 0, 1, 2, 3, or 4 wherein the method comprises reacting a compound of the formula (IVa1-1) wherein P is a protecting group, with phosphoric acid.