1-but-3-enyl-4-chlorobenzene

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: About 33.3 g (0.2 mol) of 4-(3-butenyl)-1-chlorobenzene prepared in accordance with Example 1 (b) were silylated with 2,4,4-trimethyl-2,4-disilapentane (compare Example 1 (d) with Pt as catalyst to give 1-chloro-4-(5,5,7,7-tetramethyl-5,7disilaoctyl)benzene. The boiling point was 115° C. under 0.05 hPa, and the yield was 70.8% of theory.