Multi-step reaction with 4 steps
1: 95 percent / ZnCl2, NaBH3CN / methanol / 2 h / Heating
2: 1.) n-BuLi / 1.) THF, -78 deg C, 15 min, 2.) THF, 20 deg C, 1 h
3: 1.) zirconocene(methyl) chloride, t-BuLi, 2.) I2 / 1.) THF, -78 deg C, 15 min; r.t., 2 h, 2.) CH2Cl2, 0 deg C, 4 h
4: 1.) DBU, 2.) B2H6*Me2S / 1.) toluene, 60 deg C, 1 h, 2.) THF, r.t., 3 h
With
n-butyllithium; zirconocene methyl chloride; diborane-dimethylsulfide complex; iodine; tert.-butyl lithium; sodium cyanoborohydride; 1,8-diazabicyclo[5.4.0]undec-7-ene; zinc(II) chloride;
In
methanol;