1.1
Reagents:
Dimethyl sulfoxide
,
Oxalyl chloride
Solvents:
Dichloromethane
;
-78 °C; 15 min, -78 °C
1.2
Solvents:
Dichloromethane
;
-78 °C
1.3
Reagents:
Triethylamine
;
-78 °C; 2 h, -78 °C → rt
1.4
Solvents:
Water
;
rt

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