Sulfuric Acid → HCID 86652437, compound

Participants

Reaction Conditions

Reaction Steps

The reaction was carried out in a procedure similar to that described in Tetrahedron, 50(9), 2821-30; 1994: To a solution of 1-[(trimethylsilyl)oxy]cyclopentanecarbonitrile (2.25 g, 12.3 mmol, prepared as described in Organometallics, 3(11), 1660-5; 1984) in toluene (18 mL) at −45° C. was added dropwise 1.0 M of diisobutylaluminum hydride in hexane (17.2 in L, 17.2 mmol). The solution was then allowed to warm to 0° C. and stir for 1 h at this temperature. The reaction mixture was poured into a mixture of diethyl ether (25 mL) and ammonium chloride (25 mL, saturated). To the resulting mixture, at 15° C., was added a dilute solution of sulfuric acid (prepared by diluting 1.53 mL of concentrated H2SO4 with 50 mL water). The solution was then stirred at a temperature of 5° C. overnight. The mixture was extracted with three portions of diethyl ether, the combined extracts were washed with brine, dried over sodium sulfate, decanted and concentrated to afford product (0.84 g, 36%), which was used without further purification in Step 2. 1H NMR (300 MHz, CDCl3): δ 9.47 (s, 1H), 1.88-1.46 (m, 8H), 0.00 (s, 9H).

Provenance & Evidence