Multi-step reaction with 11 steps
1: 1.) n-BuLi / 1.) THF, hexane, 0 deg C, 2.5 h, 2.) a) 0 deg C, 0.5 h, b) RT, 2.5 h
2: 1.) n-BuLi / 1.) Et2O, TMEDA, hexane, 0 deg C, 1 h, 2.) from 0 deg C to RT
3: (COCl)2, DMF / CH2Cl2 / 1 h / 0 °C
4: CH2Cl2 / 1.5 h / 0 °C
5: 83 percent / K2CO3 / acetone / 12 h / Heating
6: 88 percent / 0.25 h
7: 1.) NaH / 1.) THF, 0 deg C, 30 min, 2.) from 0 deg C to RT, 1 h
8: 1.) 9-borabicyclo<3.3.1>nonane (9-BBN), 2.) 1 M NaOH, 30percent aq. H2O2 / 1.) THF, a) 0 deg C, 40 min, b) RT, 40 min, 2.) a) 0 deg C, 30 min, b) RT, 30 min
9: 92 percent / pyridine / CH2Cl2 / 24 h / 2 °C
10: 97 percent / n-Bu4NF / tetrahydrofuran / 1.5 h
11: 99 percent / H2 / 10percent Pd/C / methanol / 2 h / Ambient temperature
With
pyridine; sodium hydroxide; 9-borabicyclo[3.3.1]nonane dimer; n-butyllithium; oxalyl dichloride; tetrabutyl ammonium fluoride; hydrogen; dihydrogen peroxide; sodium hydride; potassium carbonate; N,N-dimethyl-formamide;
palladium on activated charcoal;
In
tetrahydrofuran; methanol; dichloromethane; acetone;
DOI:10.1021/jm00109a013