2736 Bull. Chem. Soc. Jpn., 68, No. 9 (1995) Pyrrole Synthesis Table 2. Synthesis of Pyrroles 10a- -h Prepared Imidothioates R1 Nitro olefins 6 Conditions R2 R3 Yield (Product) % Ph(la) Me(lc) Me(lc) H (Id) Ph(la) Me(lc) H (Id) Ph(la) p-MeOC6H4 Et Д, 4 h p-MeOC6H4 Et Д, 3 d Ph Et Д, 3 d Ph Et Д, 3 d Me Et Rt, 2 h then Д, 4 h Me Et Rt, 20 h then Д, 48 h Me Et Rt, 20 h then Д, 48 h Me П-С5Н11 Rt, 2 h then Д, 4 h 84 (10a) 52 (10b) 47 (10c) 35 (lOd) 52 (10e) 12 ...