Reaction #1986

ord-e94dfad47a4a48328c7cf02bef7e5975

Conditions

Temperature
0°CELSIUS
Detailed conditions
See reaction.notes.procedure_details.

Workup

  1. 1
    Washwashed with water and brine
  2. 2
    Otherdried
  3. 3
    OtherRemoval of the solvent

Procedure

The compound from step 456b (1.61 g) was dissolved in dry pyridine, and the solution was cooled to 0° C. To this was added 1.458 g of p-toluenesulfonyl chloride in 4 mL of dry pyridine, and the reaction was stirred at 0.C for 4 days. The mixture was diluted with 300 mL of methylene chloride, then washed with water and brine and dried. Removal of the solvent gave 2.81 g of the title compound.

Source

DOI: 10.6084/m9.figshare.5104873.v1Patent: US05726182uspto-grants-1998_03