Scale-Up Guide: Buchwald-Hartwig Amination Reaction

Kit to Hit Scale-Up Guide

Important Note

All of the preformed catalysts used in the kit are air and moisture stable complexes in their commercially available form. Once activated by base under the reaction conditions they become sensitive to air. To best enable scale-up success, the use of standard Schlenk technique is recommended.

General Guidelines for Catalytic Reaction Scale-Up

  • Oven dry all glassware and stir bars
  • Preheat oil bath to avoid temperature spiking
  • Use dry, high purity reagents (and substrates)1
  • Use unopened Sure/Seal™ anhydrous solvents (or newly degassed)1
  • Keep reactions under an atmosphere of nitrogen

Example Experimental

All solids (base, substrates, catalyst) were weighed on a bench top balance and added to a cooled, oven dried flask1 equipped with an oven dried stir bar. The reaction was capped and then purged and backfilled with nitrogen (3x) with a nitrogen-fed manifold needle. Anhydrous solvent (SureSeal™ed and punctured with a nitrogen-fed manifold needle) was then added via syringe. If a liquid bases was required, it was added as the final component via syringe. When all constituents were added, the nitrogen line was removed2 and the reaction allowed to stir at the required temperature for the duration of the reaction.

1Reaction vials capable of being sealed with a microwave cap are very useful as well. By design, the caps do not need to be replaced once punctured.

2For higher temps, a reflux condenser operated under nitrogen can be used

Buchwald-Hartwig Amination Reaction Product List
Loading
Additional Materials
Loading

Social Media

LinkedIn icon
Twitter icon
Facebook Icon
Instagram Icon

MilliporeSigma

Research. Development. Production.

We are a leading supplier to the global Life Science industry with solutions and services for research, biotechnology development and production, and pharmaceutical drug therapy development and production.

© 2021 Merck KGaA, Darmstadt, Germany and/or its affiliates. All Rights Reserved.

Reproduction of any materials from the site is strictly forbidden without permission.