反应详情

Pinacol (130 g) was added to BOH solution (500 g) of a commercially available titanium tetrabutoxide tetramer (243 g) and agitated at room temperature for 30 minutes. After the solution was concentrated under reduced pressure at 40° C., it was heated to 60° C. and heating was continued under reduced pressure to generate no distillate. Then, PGMEA (1,200 g) was added thereto and heated under reduced pressure at 50° C. until no BOH was distilled to obtain a PGMEA solution of a titanium-containing compound [A-IV] (1,000 g) (compound concentration: 22%). The molecular weight (Mw) of the compound measured in terms of polystyrene was 1,150.

1. concentrationAfter the solution was concentrated under reduced pressure at 40° C.
2. temperatureit was heated to 60° C.
3. temperatureheating
4. additionThen, PGMEA (1,200 g) was added
5. temperatureheated under reduced pressure at 50° C. until no BOH
6. distillationwas distilled