Multi-step reaction with 12 steps
1.1: 81.9 percent / pyridine; piperidine / 8 h / Heating
2.1: 91.1 percent / hydrogen; acetic acid / Pd-C / 48 h / Heating
3.1: oxalyl chloride / CH2Cl2 / 0 - 20 °C
4.1: 25.01 g / n-butyllithium / tetrahydrofuran; hexane / -78 - 0 °C
5.1: dibutylboron triflate; ethyldiisopropylamine / CH2Cl2 / cooling
5.2: 21.7 percent / CH2Cl2 / cooling
6.1: 100 percent / lithium borohydride / diethyl ether; H2O / 0 - 20 °C
7.1: 70.9 percent / triethylamine; 4-(dimethylamino)pyridine / dimethylformamide / 4 h / -15 °C
8.1: 90.2 percent / dimethyl sulfoxide; 1,3-dicyclohexylcarbodiimide; pyridinium trifluoroacetate / toluene / 24 h / 20 °C
9.1: 89.1 percent / acetic acid / tetrahydrofuran; H2O / 15 h / 20 °C
10.1: magnesium / tetrahydrofuran
10.2: 56.2 percent / tetrahydrofuran / 1 h / -78 °C
11.1: N-methylmorpholine N-oxide; molecular sieves 4 Angstroem; tetrapropylammonium perruthenate / CH2Cl2 / 6 h / 20 °C
12.1: sodium dihydrogen phosphate; 2-methyl-2-butene; sodium chlorite / H2O; 2-methyl-propan-2-ol / 1 h / 0 °C
With
piperidine; pyridine; dmap; sodium chlorite; lithium borohydride; n-butyllithium; tetrapropylammonium perruthennate; sodium dihydrogen phosphate; 2-methyl-but-2-ene; oxalyl dichloride; 4 A molecular sieve; di-n-butylboryl trifluoromethanesulfonate; hydrogen; pyridinium trifluroacetate; magnesium; acetic acid; dimethyl sulfoxide; 4-methylmorpholine N-oxide; triethylamine; N-ethyl-N,N-diisopropylamine; dicyclohexyl-carbodiimide;
palladium on activated charcoal;
In
tetrahydrofuran; diethyl ether; hexane; dichloromethane; water; N,N-dimethyl-formamide; toluene; tert-butyl alcohol;
5.2: aldol reaction / 10.2: Grignard reaction;
DOI:10.1271/bbb.67.2183