Abstract
In a previous publication (Org. Process Res. Dev. 2010, 14, DOI:10.1021/op100161y) we described the process research and development of a manufacturing route for the potent SRC kinase inhibitor AZD0530. While the route was successfully used to manufacture 4.5 kg of AZD0530 difumarate, it was still relatively long, used two Mitsunobu couplings, and was, in our opinion, undesirable for manufacture on a larger scale. Herein we describe the research and development of a shorter, more practical synthesis of AZD0530 difumarate. The new route, which required fewer steps, scaled well to produce >80 kg of AZD0530 difumarate in an overall yield of 38%.
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