Multi-step reaction with 9 steps
1: 99 percent / NaH / dimethylformamide / 4 h / Ambient temperature
2: dimethyldioxirane / CH2Cl2; acetone / 1 h / 0 °C
3: tetra-n-butylammonium fluoride (TBAF) / tetrahydrofuran / Ambient temperature
4: 76 percent / 4-(dimethylamino)pyridine (DMAP), pyridine / 12 h / 35 °C
5: 99 percent / NaH / dimethylformamide / 3 h / Ambient temperature
6: 85 percent / ethanol / 3 h / Heating
7: 86 percent / SnCl2, AgClO4, 2,6-di-tert-butylpyridine, 4A molecular sieves / diethyl ether / 48 h / Ambient temperature
8: 84 percent / hydrochloric acid / methanol; benzene / 8 h / Ambient temperature
9: 61 percent / 4-(dimethylamino)pyridine (DMAP), 1-<3-(dimethylamino)propyl>-3-ethylcarbodiimide hydrochloride (EDCI) / CH2Cl2 / 6 h / Ambient temperature
With
pyridine; hydrogenchloride; dmap; 2,6-di-tert-butyl-pyridine; 4 A molecular sieve; tetrabutyl ammonium fluoride; silver perchlorate; 3,3-dimethyldioxirane; sodium hydride; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; tin(ll) chloride;
In
tetrahydrofuran; methanol; diethyl ether; ethanol; dichloromethane; N,N-dimethyl-formamide; acetone; benzene;
DOI:10.1021/ja00028a036