Rapid Optimization of the Hydrolysis of N‘-Trifluoroacetyl-S-tert-leucine-N-methylamide Using High-Throughput Chemical Development Techniques

• Published in: Organic process research & development 2001-05, Vol.5 (3), p.294-298
• Main Authors: Rosso, Victor W., Pazdan, James L., Venit, John J.
• Format: Article
• Language: English
• ISSN: 1083-6160; 1520-586X
• DOI: 10.1021/op010011s

Our efforts are focused on the application of automation to Process R&D. This article will describe the application of high throughput methods to rapidly investigate a development challenge. In this case we needed to study the deprotection of N‘-trifluoroacetyl-S-tert-leucine-N-methylamide which afforded a lower than expected yield when subjected to standard deprotection reaction conditions. This chemistry was systematically investigated by a sequential series of high-throughput experiments using various automated and semi-automated systems. The studies included a combinatorial screen of discrete reaction conditions, a screening DOE to study a broad range of continuous factors, and a two-factor central composite design to optimize the important factors. By applying high-throughput methods we were able to optimize the yield of the reaction by performing a large number of experiments in a short period of time.