1H-1,2,3-Benzotriazol-l-yl(2-furyl)methanone (6.1d): yellow needles (from

methanol); mp 171-173 C (Lit.[92T7817] mp 172-174 C); yield, 91%.

 1H-1,2,3-Benzotriazol-l-yl(2-pyridyl)methanone (6.1e): yellow microcrystals

(from chloroform/hexanes); mp 95-97 C (Lit.[92T7817] mp 97-100 C); yield, 95%.

 1H-1,2,3-Benzotriazol-l-yl(1H-indol-2-yl)methanone (6.1f): yellowish

microcrystals (from chloroform); mp 215-216 C; yield, 36%; 1H NMR (DMSO-d6) 6

7.13-7.22 (m, 1H), 7.36-7.44 (m, 1H), 7.59-7.71 (m, 2H), 7.78-7.90 (m, 2H), 8.04 (s,

1H), 8.32 (d, J= 8.2 Hz, 1H), 8.39 (d, J= 8.4 Hz, 1H), 12.5 (s, 1H); 13C NMR (DMSO-

d6) 6 112.9, 114.5, 114.5, 120.1, 120.8, 123.2, 126.4, 126.5, 126.8, 127.0, 130.7, 131.8,

138.4, 144.9, 158.4. Anal. Calcd for C15H10N40: C, 68.69; H, 3.84; N, 21.36. Found: C,

68.63; H, 3.87; N, 21.36.

 1H-1,2,3-Benzotriazol-l-yl(1H-pyrrol-2-yl)methanone (6.1g): yellow prisms

(from methanol); mp 159-161 C (Lit.[92T7817] mp 161-162 C); yield, 86%.

 1H-1,2,3-Benzotriazol-1-yl(4-methoxyphenyl)methanone (6.1h): colorless flakes

(from ethanol); yield: 72%; m.p. 96-97 C (Lit.[99JCS(P1)2661] mp 96-97 C).

 1-(1H-1,2,3-Benzotriazol-l-yl)-2-phenyl-l-ethanone (6.1i): white crystals (from

CH2C2/hexanes); Yield: 84%; m.p. 65-66 C (Lit.[99JCS(P1)2661] mp 66-67 C).

 1H-1,2,3-Benzotriazol-l-yl(1-naphthyl)methanone (6.1j): white microcrystals

(from benzene); Yield: 88%; m.p. 136-137 C (Lit.[99JCS(P1)2661] mp 136-137 C).

6.4.2 General Procedure for C-Acylation of Pyrroles (6.2, 6.4, 6.6) or Indoles (6.9, 6.11)
using N-Acvlbenzotriazoles 6.1a-g.

 TiC14 (1.OM in CH2C12, 4 mL, 4 mmol) was added to a mixture of pyrrole (6.2, 6.4,

6.6) or indole (6.9, 6.11) (2.5 mmol) and N-acylbenzotriazole (2.0 mmol) in CH2C12