A Concise Synthesis of (<i>E</i>)-3-Amino-1-phenyl-1-butene, a Monoamine Oxidase Inhibitor

Ventura, Wellington Martins; Taylor, Jason G.

doi:10.1080/00304948.2014.922385

Cited by 1 publication

(1 citation statement)

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“…1-Phenyl-1,3-butadiene (1-PB) was prepared according to a known procedure through a Wittig reaction between trans -cinnamaldehyde and methyltriphenylphosphonium iodide in the presence of t -BuOK; purification was performed using column chromatography to obtain the monomer as a transparent oil in an 89% yield . The monomer was characterized using 1 H and 13 C NMR; please refer to the Supporting Information.…”

Section: Methodsmentioning

confidence: 99%

High-Glass-Transition-Temperature Hydrocarbon Polymers Produced through Cationic Cyclization of Diene Polymers with Various Microstructures

Cai

Jing

et al. 2017

Macromolecules

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A series of prepolymers were treated with CF3SO3H to cationically cyclize adjacent diene–styrene/diene–diene units into main-chain cyclic units. Diene–diphenylethylene alternating copolymers synthesized using anionic copolymerization were first cyclized completely without intermolecular linking reactions. The cyclization produced much higher T g values (approximately 200 °C) than those of cyclized random diene–styrene copolymers (approximately 130 °C). To eliminate the number of spacer carbons between cyclic repeating units, poly(1-phenyl-1,3-butadiene) (PPB) was used as a prepolymer in cationic cyclization. The T g increased substantially from 200 to 271 °C as the 3,4-structure content increased from 8% to 80%. The cyclized PPB with high 3,4-structure content is the highest T g hydrocarbon polymer yet reported. All results indicated that the backbone rigidity of the cyclic hydrocarbon polymer can be drastically increased by reducing the number of spacer carbons and increasing carbon sharing between cyclic repeating units.

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Section: Methodsmentioning

confidence: 99%