61603-68-7
S-methyl 2-hydroxypropanethioate
+
1207973-75-8
acetic acid tert-butyl ester lithium enolate
→
61603-71-2
tert-butyl 4-hydroxy-3-oxopentanoate
103521-58-0
t-butyl 3-amino-4-(1-ethoxyethoxy)-2-pentenoate