Partially Verified80% confidenceFactExact time
In 1986, Kagan reported that in certain catalytic systems, the relationship between catalyst ee and product ee is nonlinear, that is, a positive nonlinear effect or a negative nonlinear effect.
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10/12/2026
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UnverifiedIn 1986, Kagan published findings on nonlinear effects, discovering that product ratios do not change linearly with the catalyst but follow a curve, which can significantly increase the proportion of the target mirror-image molecule.73% similarUnverifiedHenri B. Kagan revealed a nonlinear effect: under certain conditions, a tiny difference in catalyst chirality can have a huge impact on the proportion of enantiomers in the product.72% similarUnverifiedIn 1986, Kagan's team reported three reactions and found that the relationship between catalyst purity and product purity was not linear but curved—sometimes a catalyst of only half purity could produce a product of far higher purity, which is known as the nonlinear effect.71% similarUnverifiedThe mathematical models proposed by Kagan (such as the Kagan model and the Kagan-Ferroni model) quantitatively describe nonlinear effect behavior using dimer equilibrium constants.66% similarUnverifiedKagan experimentally confirmed the nonlinear effect model in a sulfide oxidation reaction, and the relevant findings were published in 1986.66% similar
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