Aminolysis of Epoxides in a Microreactor System: A Continuous Flow Approach to β-Amino Alcohols
作者:Matthew W. Bedore、Nikolay Zaborenko、Klavs F. Jensen、Timothy F. Jamison
DOI:10.1021/op9003136
日期:2010.3.19
The use of a continuous flow microreactor for beta-amino alcohol formation by epoxide aminolysis is evaluated. Comparison to microwave batch reactions reveals that conditions obtainable in the microreactor can match or improve yields in many eases. By increasing the pressure of the system, maximum temperatures can also exceed those accessible using a microwave unit. The use of a microreactor for epoxide aminolysis reactions in the synthesis of two pharmaceutical relevant compounds is described.
Kinetic and Scale-Up Investigations of Epoxide Aminolysis in Microreactors at High Temperatures and Pressures
作者:Nikolay Zaborenko、Matthew W. Bedore、Timothy F. Jamison、Klavs F. Jensen
DOI:10.1021/op100252m
日期:2011.1.21
A continuous-flow microreactor is applied for a kinetic study of a model beta-amino alcohol formation by epoxide aminolysis. A large number of experiments are performed in a short time with minimal reagent consumption. The kinetics of formation of secondary aminolysis between starting epoxide and product are decoupled from the primary synthesis, constructing a complete model for desired product formation. The activation energy for the formation of desired product is observed to be higher than those for regioisomer formation and for secondary aminolysis, indicating that increasing temperature improves selectivity in addition to accelerating the reaction. A set of optimized conditions is then selected for best reaction performance, and the process is scaled up to a 100-fold larger reactor volume with model predictions in good agreement with measured process performance.
CONTINUOUS FLOW SYNTHESIS OF AMINO ALCOHOLS USING MICROREACTORS
申请人:Bedore Matthew W.
公开号:US20110118469A1
公开(公告)日:2011-05-19
The present invention provides various methods for the synthesis of chemical species in a microreactor environment. In some cases, reaction products of the present invention may be valuable as intermediates and/or products in pharmaceutical and polymer research. For example, the method may involve the synthesis of amino alcohols within a microchannel. Embodiment described herein may allow for reactions with significantly shorter reaction times and increased efficiency.