Preparation of vinyl iodide 3. Reagents and conditions: a) (S)-7, c-Hex2BCl, Et3N, Et2O, −78→−20 °C, 90 % (d.r.>20:1); b) TBSOTf, 2,6-lutidine, CH2Cl2, −78 °C; c) LiAlH4, THF, −78 °C; d) K2CO3, MeOH, 91 % over 3 steps; e) c-Hex2BCl, Et3N, Et2O; EtCHO, −78→−20 °C, 94 % (d.r.>20:1); f) TBSOTf, 2,6-lutidine, CH2Cl2, −78 °C, 98 %; g) H2C=CHCH2MgBr, THF, −78 °C; h) NaIO4, MeOH, pH 7 buffer, 85 % over 2 steps; i) 19, BF3⋅OEt2, CH2Cl2, −78 °C; j) 3 m HCl, THF, H2O, 82 % over 2 steps (d.r. 10:1); k) TMSCl, imid, CH2Cl2, 97 %; l) 5, Pd(OAc)2 (10 mol %), Ag2CO3, DMF, 80 °C, 73 %; m) NaIO4/SiO2, CH2Cl2; n) [ICH2PPh3]I, NaHMDS, THF, −78 °C, 62 % over 2 steps. DMF=N,N-dimethylformamide.