2: (i) CuCl, aq. EtNH2, NH2OH*HCl, MeOH, (ii) aq. AgNO3 3: H2 / Pd View Scheme

1: (hept-6-enyl)-triphenylphosphonium bromide With n-butyllithium in hexane; dimethyl sulfoxide T=0 - 23°C; 2: acetone in hexane; dimethyl sulfoxide 16 h;

(i) nBuLi, (ii) /BRN= 1866871/; Multistep reaction;