Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Reagents & conditions: (a) DMS, dioxane, 40 °C, 2.5 h; (b) methyl 4‐formylbenzoate (47) or methyl 3‐formylbenzoate (48), triethylsilane, trifluoroacetic acid, CH2Cl2, 0 °C (10 min) ‐> rt (12 h); (c) H2, Pd(C), MeOH, rt, 12 h; (d) 4‐tert‐butylbenzoyl chloride (29), pyridine, DMF, CHCl3, reflux, 6 h; (e) LiOH, MeOH/H2O, rt, 16 h.
