The completeness of the silylation reaction allows the determination of the number average functionality by continuous wave 1 H NMR. The protonated groups of the silylated alcohol functions were identified at 100 and 250 MHz. It is observed that these three primary alcohol functions do not have ...
synthèses de diols téléchéliques isomoléculaires par télomérisationash;c) or N-(2-hydroxyethyl)-10-undecenamide (5) in the presence of benzoyl peroxide in quantitativedoi:10.1002/macp.1990.021910219Boutevin, BernardEl Idrissi, AParisi, J. P...
The examination, by 1 H NMR, of anionic hydroxytelechelic polybutadienes in conjunction with accurately measured M n values allows the simultaneous determination of the number average functionality and the identification of the nature of the chain ends bearing the functional groups. The microstructure ...
As starting materials chloro-3-acetoxy-[or 3-(2,3)-epoxypropoxy]-propyldimethylsilanes ( 2 and 3 ) were prepared by hydrosilylation of the corresponding allylic derivatives with chlorodimethylsilane, and subsequently condensed with α-hydro-ω-hydroxyoligo- (or poly-) dimethylsiloxanes ( 1b ...
doi:10.1002/macp.1989.021900207Boutevin BernardRobin J. JHüthig & Wepf VerlagDie Makromolekulare Chemie
Thanks to model molecules, the chemical shifts were specified in 13C NMR for all carbon atoms with similar groups.doi:10.1002/macp.1984.021850920Jean Marie BessièreBernard BoutevinMohamed TahaDie Makromolekulare Chemie
Synthèse d'analogues acycliques de nucléosides où la chaîne est liée à la base hétérocyclique par une liaison carbone-carbone. Nous décrivons une méthode directe pour la préparation de dérivés de la guanine et de la s-triazolo[1,5-a]pyridine.A direct method for the preparation ...
doi:10.1107/S0567740880009557Brouty, CSpinat, PWhuler, AInternational Union of CrystallographyActa Crystallographica Section B
The examination of H 2 O 2 -initiated hydroxytelechelic polybutadienes polymerized by H 2 O 2 initiation by 1 H NMR and 13 C NMR allows the identification of three main primary alcoholic groups: α-unsaturated, β-substituted/α-unsaturated and γ-unsaturated. From 1 H NMR accumulated ...