in dichloromethane Boron enolate in CH2Cl2 is treated with 1.5 equivalents of TMDM at 0°C, stirring for 2 h at room temp.; distillation;

in diethyl ether 3 h; Ambient temperaturefurther enolates: trimethysilyl, litium; further solvents, further educt acetyl isoquinolinium salt; Product distribution;