1.1
Reagents:
Copper(II) triflate
,
(2-Thiophenecarboxylato-κO2,κS1)copper
Solvents:
Acetonitrile
;
15 h, 35 °C
1.2
Reagents:
Lithium hydroxide
Solvents:
Methanol
,
Tetrahydrofuran
;
2 h, 40 °C
1.3
Reagents:
Hydrochloric acid
Solvents:
Water
;
pH 3 - 5