反应条件
1: dicyclohexylcarbodiimide / tetrahydrofuran / 1) 0 deg C to r.t., overnight, 2) r.t., 2 h, 3) -30 deg C 2: 28 percent / NaI, Na2CO3 / hexamethylphosphoric acid triamide / Et(iPr)2N, DMF 3: 77 percent / aq. NaOH / tetrahydrofuran / 1 h 4: tetrahydrofuran / 1) 5-8 deg C, 2) to 25 deg C 5: oxalic acid dihydrate / tetrahydrofuran; H2O; petroleum ether / 2 h View Scheme
参考文献
Chemische Berichte, , vol. 113, # 12 p. 3706 - 3715
