Multi-step reaction with 9 steps
1: 88 percent / LiAlH4 / toluene; tetrahydrofuran / 1) rt, 10 min; 2) 60 deg C, 13 min
2: 1.) O3, 2.) tributylphosphine / 1) CH2Cl2, -78 deg C, 5 min; 2) CH2Cl2, rt, 2.5 h
3: 1.) potassium tert-butoxide, n-BuLi, (+)-methoxydiisopinocamphenylborane, 2.) BF3*OEt2, 3.) aq. H2O2
4: 85 percent / DMAP / pyridine / 4.5 h
5: 100 percent / TBAF / tetrahydrofuran / 2.75 h / Ambient temperature
6: 1.) oxalyl chloride, DMSO, 2.) Et3N / 1) CH2Cl2, -78 deg C, 1 h; 2) CH2Cl2, -78 deg C, 20 min
7: 65 percent / CrCl2, NiCl2 / toluene; tetrahydrofuran; dimethylformamide / 60 h
8: 96 percent / Dess-Martin periodinane, pyridine / CH2Cl2 / 1 h / Ambient temperature
9: 99.7 percent / (PPh3CuH)6 / benzene-d6 / 1 h
With
pyridine; chromium dichloride; dmap; lithium aluminium tetrahydride; n-butyllithium; oxalyl dichloride; tributylphosphine; (PPh3CuH)6; boron trifluoride diethyl etherate; potassium tert-butylate; tetrabutyl ammonium fluoride; dihydrogen peroxide; Dess-Martin periodane; ozone; dimethyl sulfoxide; triethylamine; (+)-B-methoxydiisocamphenylborane; nickel dichloride;
In
tetrahydrofuran; pyridine; dichloromethane; benzene-d6; N,N-dimethyl-formamide; toluene;
DOI:10.1021/jo952083l