Multi-step reaction with 11 steps
1.1: 100 percent / Et3N; LiCl / tetrahydrofuran / 16.5 h / 20 °C
2.1: TiCl4; TMEDA / CH2Cl2 / 1 h / -20 °C
2.2: 90 percent / CH2Cl2 / 9 h / -20 - -5 °C
3.1: 89 percent / pyridine; DMAP / CH2Cl2 / 8 h / 0 °C
4.1: 74 percent / DMAP / CH2Cl2 / 46.5 h / 20 °C
5.1: 98 percent / NaIO4 / tetrahydrofuran; H2O / 3 h / cooling
6.1: 100 percent / N,N'-dicyclohexylcarbodiimide; DMAP / CH2Cl2 / 26 h / 20 °C
7.1: 100 percent / hydrogen / Pd(OH)2/C / methanol / 8 h / 40 °C / 22800 Torr
8.1: 62 percent / DMAP; 2-methyl-6-nitrobenzoic acid anhydride; molecular sieves 4 Angstroem / toluene / 16 h / 20 °C
9.1: 100 percent / trifluoroacetic acid / CH2Cl2 / 9.5 h / 20 °C
10.1: 94 percent / HOBt; EDC*HCl; N-methylmorpholine / dimethylformamide / 23 h / 30 °C
11.1: 100 percent / hydrogen / Pd/C / ethyl acetate / 6.5 h / 30 °C / 760 Torr
With
4-methyl-morpholine; pyridine; dmap; sodium periodate; N,N,N,N,-tetramethylethylenediamine; 4 A molecular sieve; 2-methyl-6-nitrobenzoic anhydride; hydrogen; titanium tetrachloride; benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; triethylamine; dicyclohexyl-carbodiimide; trifluoroacetic acid; lithium chloride;
palladium dihydroxide; palladium on activated charcoal;
In
tetrahydrofuran; methanol; dichloromethane; water; ethyl acetate; N,N-dimethyl-formamide; toluene;
DOI:10.1021/jo0604890