Multi-step reaction with 12 steps
1: 1.) lithium aluminium hydride, 2.) dichlorodicyanobenzoquinone / 1.) THF, 60 degC, 14 h, 2.) dioxane, reflux, 14 h
2: 1.) p-toluenesulfonic acid, 2.) 30percent H2O2, 10percent NaOH / 1.) CH2Cl2, r.t. 1 h, 2.) MeOH, r.t. 14 h
3: Li, NH4Cl / liquid ammonia; tetrahydrofuran / 4 h / -78 °C
4: pyridine / 14 h / Ambient temperature
5: 2 M HCl / methanol; tetrahydrofuran / 2 h / Ambient temperature
6: 82 percent / pyridinium chlorochromate, sodium acetate / CH2Cl2 / 1 h / Ambient temperature
7: 81 percent / dimethylsulfoxide / 72 h / 95 °C
8: 1.) N-bromosuccinimide, 2.) tetra-n-butylammonium bromide, tetra-n-butylammonium fluoride / 1.) carbon tetrachloride, reflux, 25 min., 2.) THF, r.t., 80 min.
9: 37 percent / CHCl3 / 1 h / Ambient temperature
10: 43.1 percent / sodium borohydride / tetrahydrofuran; methanol / 0.17 h / Ambient temperature
11: 36 percent / lithium aluminium hydride / tetrahydrofuran / 2 h / Heating
12: 1.) benzene, ethanol, irradiation, 2.5 min., 0 degC, 2.) reflux, 1 h
With
hydrogenchloride; sodium hydroxide; sodium tetrahydroborate; N-Bromosuccinimide; lithium aluminium tetrahydride; tetrabutyl ammonium fluoride; tetrabutylammomium bromide; dihydrogen peroxide; sodium acetate; lithium; ammonium chloride; toluene-4-sulfonic acid; pyridinium chlorochromate; 2,3-dicyano-5,6-dichloro-p-benzoquinone;
In
tetrahydrofuran; pyridine; methanol; dichloromethane; chloroform; ammonia; dimethyl sulfoxide;
DOI:10.1248/cpb.32.3866