Claims
- 1. A method of synthesizing a compound of the formula wherein each R3, R4, R5, R6, and R7 is independently selected from H, C1-C10 alkyl, C2-C10 alkenyl, C2-C10alkynyl, halo, cyano, nitro, trifluoromethyl, trifluoromethoxy, azido, —OR12, —C(O)R12, —C(O)OR12, —NR13C(O)OR15, —OC(O)R12, —NR13SO2R15, —SO2NR12R13, —NR13C(O)R12, —C(O)NR12R13, —NR12R13, —CH═NOR12, —S(O)jR12 wherein j is an integer from 0 to 2, —(CR13R14)t(C6-C10 aryl), —(CR13R14)t(4-10 membered heterocyclic), —(CR13R14)t(C3-C10 cycloalkyl), and —(CR13R14)tC≡CR16; and wherein the cycloalkyl, aryl and heterocyclic moieties of the foregoing groups are optionally fused to a C6-C10 aryl group, a C5-C8 saturated cyclic group, or a 4-10 membered heterocyclic group; and said alkyl, alkenyl, cycloalkyl, aryl and heterocyclic groups are optionally substituted by 1 to 3 substituents independently selected from halo, cyano, nitro, trifluoromethyl, trifluoromethoxy, azido, —NR13SO2R15, —SO2NR12R13, —C(O)R12, —C(O)OR12, —OC(O)R12, —NR13C(O)OR15, —NR13C(O)R12, —C(O)NR12R13, —NR12R13, —OR12, C1-C10 alkyl, C2-C10 alkenyl, C2-C10 alkynyl, —(CR13R14)t(C6-C10 aryl), and —(CR13R14)t(4-10 membered heterocyclic);each R12 is independently selected from H, C1-C10 alkyl, —(CR13R14)t(C3-C10 cycloalkyl), —(CR13R14)t(C6-C10 aryl), and —(CR13R14)t(4-10 membered heterocyclic); said cycloalkyl, aryl and heterocyclic R12 groups are optionally fused to a C6-C10 aryl group, a C5-C8 saturated cyclic group, or a 4-10 membered heterocyclic group; and the foregoing R12 substituents, except H but including any optional fused rings, are optionally substituted by 1 to 3 substituents independently selected from halo, cyano, nitro, trifluoromethyl, trifluoromethoxy, azido, —C(O)R13, —C(O)0R13, —OC(O)R13, —NR13C(O)R14, —C(O)NR13R14, —NR13R14, hydroxy, C1-C6 alkyl, and C1-C6 alkoxy; each t is independently an integer from 0 to 5; each R13 and R14 is independently H or C1-C6 alkyl, and where R13 and R14 are as —(CR13R14)t each is independently defined for each iteration of t in excess of 1; R15 is selected from the substituents provided in the definition of R12 except R15 is not H; R16 is selected from the list of substituents provided in the definition of R12 and —SiR17R18R19; and,R17, R18 and R19 are each independently selected from the substituents provided in the definition of R12 except at least one of R17, R18 and R19 is not H; which method comprises reacting, at a temperature of from about −78° C. to about 0° C., in the presence of n-butyl lithium and in diethyl either a compound of formula wherein W is a halogen, and R3, R4 and R5 are as defined above, with a compound of the formula wherein R6 and R7 are as defined above.
Parent Case Info
This is a division of application Ser. No. 09/836,026, filed Apr. 17, 2001 now U.S. Pat. No. 6,388,092, which is a division of application Ser. No. 09/501,163 filed Feb. 9, 2000 now U.S. Pat. No. 6,258,824, which claims the benefit of U.S. Provisional Application No. 60/119,702, filed Feb. 11, 1999, all of which are incorporated herein by reference.
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