Multi-step reaction with 11 steps
1: 1.) Et2O*BF3; 2.) aq AcOH / 1.) CH2Cl2, -78 deg C, 1 h; 2.) THF, r.t., 12 h
2: 1.) pyridine; 2.) Zn(BH4)2 / 1.) THF, 16 h, r.t.; 2.) ether, -30 deg C, 6 h
3: pyridine / 3 h / 0 °C
4: Pd(MeCN)2Cl2 / tetrahydrofuran / 16 h / Ambient temperature
5: 1percent K2CO3 / methanol / 1.67 h / Ambient temperature
6: PPh3, diethylazodicarboxylate / tetrahydrofuran / 1 h / -30 °C
7: Bu4NF / tetrahydrofuran / 16 h / Ambient temperature
8: 1.) (COCl)2, DMSO; 2.) NEt3, water / 1.) CH2Cl2, -60 deg C, 10 min, 15 min; 2.) r.t.
9: NaOH / methanol / 16 h / Ambient temperature
10: pyridinium p-toluenesulfonate / CH2Cl2 / 16 h / Ambient temperature
11: tetrahydrofuran / 168 h / -62 °C
With
pyridine; dichloro bis(acetonitrile) palladium(II); sodium hydroxide; zinc(II) tetrahydroborate; oxalyl dichloride; boron trifluoride diethyl etherate; tetrabutyl ammonium fluoride; water; pyridinium p-toluenesulfonate; potassium carbonate; acetic acid; dimethyl sulfoxide; triethylamine; triphenylphosphine; diethylazodicarboxylate;
In
tetrahydrofuran; pyridine; methanol; dichloromethane;
DOI:10.1002/(SICI)1099-0690(199805)1998:5<805::AID-EJOC805>3.0.CO;2-R