Sérgio Clementi

Abstract Treatment of the title compound with chloride ions in acetonitrile leads mainly to the formation of trans ‐2,3‐dichloro‐2,3‐dihydrobenzofuran. Since a nucleophilic displacement of bromide anion by chloride anion can be excluded, a mechanism involving the equilibrium 2Cl − + Br 2 ⇋ 2Br − + Cl 2 is suggested.

10.1002/jhet.5570140548

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Citations (2)

ChemInform Abstract: THE KINETICS AND MECHANISM OF THE ELECTROPHILIC SUBSTITUTION OF HETEROAROMATIC COMPOUNDS PART 34, THE HYDROGEN‐EXCHANGE RATES OF METHYLPYRAZOLES

Chemischer Informationsdienst (1973)

Sérgio Clementi Paul P. Forsythe C. D. Johnson Alan R. Katritzky

10.1002/chin.197351181

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Application of Principal Components Analysis to TLC Data for 596 Basic and Neutral Drugs in Four Eluent Systems

Journal of Chromatographic Science (1984)

Giuseppe Musumarra Giuseppe Scarlata Guido Romano Sérgio Clementi Svante Wold

Principal component analysis (PCA) of the Rf values for 596 basic and neutral drugs in four eluent mixtures provided a significant two-component model which explained 77% of the total variance. Each drug was characterized on a plane by two principal component scores. The loading plot shows that three eluent mixtures are clustered into the same group providing similar information. For identification of unknowns, the method provided a drastic reduction of the range of possibilities to a few candidates.

Plot (graphics)

Feature (linguistics)

10.1093/chromsci/22.12.538

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Citations (42)

ChemInform Abstract: ABHAENGIGKEIT DER RHO‐WERTE ELEKTROPHILER SUBSTITUTIONEN VON DER NATUR DES AROMATISCHEN SUBSTRATS, TRIFLUORACETYLIERUNG SUBSTITUIERTER FURANE, THIOPHENE UND PYRROLE

Chemischer Informationsdienst (1972)

Sérgio Clementi Gianlorenzo Marino

Pyrrole

10.1002/chin.197212101

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The GOLPE procedure for predicting olive crop production from climatic parameters

Journal of Chemometrics (2001)

Monica Clementi Sérgio Clementi Marco Fornaciari Fabio Orlandi Bruno Romano

This paper reviews the philosophy of the GOLPE procedure, explaining the reasons for the validation criterion and variable selection method used and comparing GOLPE with other regression and variable selection methods. Its application to olive production, for a training set of 16 years, allows one to improve the uncertainty of prediction of the yearly crop production from temperature, rain, heliophany, humidity and wind from 30% to 14% and to indicate the climatic parameters affecting crop production. Copyright © 2001 John Wiley & Sons, Ltd.

Crop Production

10.1002/cem.670.abs

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Citations (1)

Mixture Optimization by the CARSO Procedure and DCM Strategies

Applied Mathematics (2014)

Sérgio Clementi Mauro Fernandi Diego Decastri Matteo Bazzurri

The paper illustrates a new way of using the CARSO procedure for response surfaces analyses derived from innovative experimental designs in multivariate spaces, based on Double Circulant Matrices (DCMs). We report a case study regarding a design based on a DCM for 4 variables. The final response surface model is obtained by the formerly developed CARSO method.

Design of experiments

10.4236/am.2014.519290

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Citations (2)

The failure of reactivity indices as quantitative measures of the susceptibility of heterocyclic compounds to electrophilic substitution

Tetrahedron Letters (1975)

Sérgio Clementi Alan R. Katritzky H. Okan Tarhan

Electrophilic substitution

Heteroatom

Substitution (logic)

Reactivity

Substitution reaction