Tina L. Arrowood
Dow Chemical Company
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Publication
Featured researches published by Tina L. Arrowood.
Chemcatchem | 2013
Krishnan Venkatasubbaiah; Yan Feng; Tina L. Arrowood; Peter N. Nickias; Christopher W. Jones
The regioselective ring‐opening of 1,2‐epoxyhexane with methanol as a nucleophile is studied using an array of different molecular CoIII catalysts, specifically trans‐CoIII‐salen‐X (1‐X; X=Cl−, OTs−, BF4−, SbF6−, PF6−), cis/trans‐CoIII‐salen‐SbF6, CoIII‐salphen‐SbF6, and CoIII‐porphyrin‐SbF6. Catalytic studies show the nature of the ligand and counterion both play a significant role in influencing reaction rates, and to a lesser extent, the regioselectivity of the ring‐opening reaction, with CoIII‐porphyrin‐SbF6 as the most active and CoIII‐salphen‐SbF6 the least active soluble molecular catalysts. Unlike in the classical epoxide hydrolytic kinetic resolution reaction, non‐coordinating, non‐nucleophilic counterions proved most effective, and trans‐CoIII‐salen‐Cl, which gives very high initial rates in hydrolytic kinetic resolution, shows very low activity in epoxide ring‐opening with methanol. Supported soluble and insoluble unsymmetrical trans‐CoIII‐salen‐X catalysts are, thus, synthesized to evaluate cooperativity and stability of the CoIII‐salen species towards epoxide ring‐opening with methanol. Soluble supported trans‐CoIII‐salen‐X (X=SbF6 and OTs) shows better activity and selectivity in the title reaction than monomeric trans‐CoIII‐salen‐SbF6 catalyst because of the cooperativity introduced through the catalyst design. The stability of insoluble catalysts is evaluated by catalytic recycling experiments. The supported insoluble catalysts successfully are recovered and reused up to 5 times, showing reduced activity but unchanged selectivity after each cycle. Deactivation is attributed to several different causes based on elemental analysis and UV/Vis spectroscopic analysis of the used catalysts, with counterion and cobalt loss playing major roles.
Journal of the American Chemical Society | 2018
Arash Nowbahar; Vincent Mansard; Jodi M. Mecca; Mou Paul; Tina L. Arrowood; Todd M. Squires
A range of academic and industrial fields exploit interfacial polymerization in producing fibers, capsules, and films. Although widely used, measurements of reaction kinetics remain challenging and rarely reported, due to film thinness and reaction rapidity. Here, polyamide film formation is studied using microfluidic interferometry, measuring monomer concentration profiles near the interface during the reaction. Our results reveal that the reaction is initially controlled by a reaction-diffusion boundary layer within the organic phase, which allows the first measurements of the rate constant for this system.
Archive | 2013
Abhishek Roy; Tina L. Arrowood; Anand S. Badami; Robert C. Cieslinski; David D. Hawn; Steven D. Jons; Mou Paul; Steven Rosenberg; Huang Wu
Archive | 2013
Abhishek Roy; Tina L. Arrowood; Anand S. Badami; Robert C. Cieslinski; Bruce B. Gerhart; David D. Hawn; Steven D. Jons; Mou Paul; Martin H. Peery; XiaoHua Sam Qiu; Mark A. Rickard; Steven Rosenberg; Ian A. Tomlinson; Cheng Li Zu
Archive | 2013
Abhishek Roy; Tina L. Arrowood; Robert C. Cieslinski; David D. Hawn; Steven D. Jons; Mou Paul; Martin H. Peery; XiaoHua Sam Qiu; Steven Rosenberg; Ian A. Tomlinson; Cheng Li Zu
Archive | 2013
Tina L. Arrowood; Aman A. Desai; Steven D. Jons; Mou Paul; Abhishek Roy
Archive | 2013
Mou Paul; Tina L. Arrowood; Robert C. Cieslinski; Steven D. Jons; Steven Rosenberg; Abhishek Roy; Ian A. Tomlinson
Archive | 2014
Mou Paul; Tina L. Arrowood; Duane R. Romer
Archive | 2014
Abhishek Roy; Tina L. Arrowood; Aman A. Desai; Steven D. Jons; Mou Paul; XiaoHua Sam Qiu; Steven Rosenberg; Ian A. Tomlinson
Archive | 2014
Abhishek Roy; Tina L. Arrowood; Aman A. Desai; Steven D. Jons; Mou Paul; XiaoHua Qiu; Steven Rosenberg; Ian A. Tomlinson