Ammonium Chloride → (3-Trimethylsiloxypropyl)-cyclopentadiene

Participants

Reaction Steps

To 50 ml of a 2.3 M solution of sodium cyclopentadienylide (115 mmol), a solution of 24.3 g (115 mmol) of 3-trimethylsiloxy-1-bromo-propane in tetrahydrofurane is added. The quick formation of a pinkish solid is observed. The reaction is maintained under stirring for 12 hours and then it is neutralized with an ammonium chloride solution; the organic phase is extracted and concentrated to dryness in order to give an orange oil. (9.8 g, 50 mmol. Yield: 43%). 1H-NMR (CDCl3): 6.47-6.00 (m,3H), 3.62 (m,2H), 2.95 (m,1H), 2.87 (m,1H), 2.43 (m,2H), 1.80 (m,2H), 0.17 (s,9H).

Provenance & Evidence