1.1
Reagents:
Butyllithium
Solvents:
Toluene
,
Tetrahydrofuran
;
-80 - -70 °C; 0.5 h, -80 - -70 °C
1.2
Solvents:
Toluene
;
-80 - -70 °C; 1 h, -80 - -70 °C
1.3
Reagents:
Trifluoroacetic acid
Solvents:
Water
;
-80 - -70 °C; < -20 °C; 10 - 20 °C; 2 - 3 h, 10 - 20 °C

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