Pyridine → HCID 86653631, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 2.0 ml (250 mmol) of pyridine and of 20 ml of dichloromethane is cooled to −78° C. under nitrogen. Triflic anhydride (2.10 ml, 12.5 mmol) is added drop by drop. After 10 min, a solution of 1.29 g of the compound from step 2 (5.0 mmol) in 15 ml of CH2Cl2 is added drop by drop. The mixture is stirred for 2 hours at −78° C. The organic phase is washed with 1N HCl, H2O, sat. NaCl, dried over Na2SO4 and concentrated at reduced pressure to produce 1.68 g of the expected product (yield: 86%) used as it is for the next step.

Provenance & Evidence