Acetic Acid → HCID 67071731, compound

Participants

Reaction Steps

TEA (0.14 ml, 1.0 mmol) was added to suspension of Intermediate 2 (290 mg, 0.86 mmol) in DCM (10 ml). The mixture was stirred at RT for 10 min and then the pH value was adjusted to 5 with AcOH. The mixture was treated with N-methyl-indol-3-carbaldehyde (164 mg, 1.03 mmol) and NaBH(OAc)3 (219 mg, 1.03 mmol) following the procedure described in Example 31, A, giving (E)-3-[1′-(1-methyl-1H-indol-3-ylmethyl)-4-oxo-spiro(chromane-2,3′-piperidine)-6-yl]-acrylic acid methyl ester (380 mg) as a light orange solid.

Provenance & Evidence