Multi-step reaction with 12 steps
1: NaH / dimethylformamide
2: LiAlH4 / tetrahydrofuran
3: NBS / CHCl3 / Heating
4: n-BuLi, sec-BuLi / tetrahydrofuran / -78 °C
5: 1.) LDA, 2.) CH3SO2Cl, Et3N / 1.) THF, -78 degC
6: 1.) NaH, 2.) 9-BBN, 3.) H2O2, NaOH, 4.) (COCl)2 / 1.) DMF, 2.) THF, 4.) DMSO
7: 1.) KMnO4, 5percent KH2PO4 / 1.) t-BuOH
8: 1.) KO-t-Bu, 2.) 0.4M NaOH / 1.) C6H6, 23 degC, 2.) aq. EtOH, reflux
9: 93 percent / Bu4NF / tetrahydrofuran / 23 °C
10: 90 percent / (COCl)2, DMSO
11: 1.) Et3N, 2.) mCPBA
12: 90 percent / Dowex 50W-X8 H(1+) resin / methanol / 144 h / 23 °C
With
sodium hydroxide; potassium permanganate; potassium dihydrogenphosphate; N-Bromosuccinimide; lithium aluminium tetrahydride; 9-borabicyclo[3.3.1]nonane dimer; n-butyllithium; oxalyl dichloride; Dowex 50W-X8 H(1+) resin; potassium tert-butylate; tetrabutyl ammonium fluoride; dihydrogen peroxide; sec.-butyllithium; sodium hydride; dimethyl sulfoxide; methanesulfonyl chloride; triethylamine; 3-chloro-benzenecarboperoxoic acid; lithium diisopropyl amide;
In
tetrahydrofuran; methanol; chloroform; N,N-dimethyl-formamide;
DOI:10.1021/ja00258a077