Multi-step reaction with 9 steps
1: 1.) EtOCOCl, Et3N, 2.)NaBH4 / 1.) THF, -10 - -2 deg C, 45 min, 2.) MeOH, 0 deg C, 1 h
2: Et3N / 0 °C
3: NaI / acetone / 3 h / 56 °C
4: NaH / dimethylformamide / 45 h / 80 °C
5: mCPBA / CH2Cl2 / 4 h / -10 - 25 °C
6: 72 percent / LiNTMS2, ZnCl2 / tetrahydrofuran; diethyl ether / 72 h / -20 - 25 °C
7: LiOH / dioxane; H2O / 6 h / 25 °C
8: xylene / 10 h / 160 °C
9: 1.) BuLi,2.) H2 / 2.) 5percent Pd/C / 1.) THF, -78 deg C, 1.5 h, 2.) EtOH-THF, 1 atm, 20 h
With
lithium hydroxide; sodium tetrahydroborate; n-butyllithium; hydrogen; chloroformic acid ethyl ester; sodium hydride; triethylamine; 3-chloro-benzenecarboperoxoic acid; sodium iodide; zinc(II) chloride; lithium hexamethyldisilazane;
palladium on activated charcoal;
In
tetrahydrofuran; 1,4-dioxane; diethyl ether; dichloromethane; water; N,N-dimethyl-formamide; acetone; xylene;
DOI:10.1016/S0040-4039(00)79571-2