Question

Organic chemistry problem. Draw mechanisms for the following.

Scheme III. Preparation of the Lactone Portion OH Seiten en MOH 756% het WOW MOS Meo Meows OR OOP Meow 23 RETI 23 26 R:H 24 R=H 27 R = SitBule, . (a) NaoMe, MeOH; (b) Hg(OAc),, MeOH; (c) NaCl; (d) NaB- H4; (e) (Ph),CCI, pyr; (f) Nah, ArSO,C1; (g) LiAlHa; (h) Li, NH3 (liquid); (i) PhOCSCI, pyr; () CH2=CHCH,SnBus, hv; (k) t- BuSiMe,Cl, imidazole, DMF.

note: the bonds of the epoxide are both "dashed"
thanks in advance

Answer 1

JAMOA are 3 Mer (56% OAL (@Noome, moon 4 Nesterilizia Но Vo wh/ Ome 73 844 (Pha Ccd, Pyr ome i-on Che Oho Pictone Remove by Pyridine Bade ри ION 2 DL OM your O-c-ph on

Tok Attack Ome 277 ② Li, NH4 L Me 011 oty MENAH Neutrilization ♡ R= Tv 60) Reн phold or 28 more more Revetive ome om Neutrilization lume

ome .." Taxophi Stille (hvi Stille xoph 0 coupling Name Reaction t-Busime T7 ® imidazole Bole-on Proton Remove the La me me 0-5; 2-By Men Ome