Documents disponibles écrits par cet auteur

Synthesis of β-amino alcohols from methyl epoxy stearate / Sukhprit Singh in Industrial & engineering chemistry research, Vol. 49 N° 7 (Avril 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 7 (Avril 2010) . - pp. 3106–3111 Titre : Synthesis of β-amino alcohols from methyl epoxy stearate Type de document : texte imprimé Auteurs : Sukhprit Singh, Auteur ; Raman Kamboj, Auteur Année de publication : 2010 Article en page(s) : pp. 3106–3111 Note générale : Industial Chemistry Langues : Anglais (eng) Mots-clés : Synthesis  β-Amino  Alcohols  Methyl  Epoxy  Stearate Résumé : Oils and fats are an important source of renewable raw materials, and the availability of functionalized fatty acids such as epoxy ring containing fatty acids gives us a convenient source of starting materials for the synthesis of various biodegradable derivatives. Methyl esters of the epoxidized oleic acid [methyl 9,10-epoxy octadecanoate (1)] on the catalytic epoxy ring opening reaction with various aliphatic [butyl (2), octyl (3)], cyclic [pyrrolidine (4), piperidine (5), morpholine (6)], and aromatic [p-chloroaniline (7), p-anisidine (8), benzyl amine (9), aniline (10)] amines resulted in the formation of the respective β-amino alcohols [methyl 9-(butylamino)-10-hydroxyoctadecanoate (11a)/methyl 10-(butylamino)-9-hydroxyoctadecanoate (11b), methyl 10-hydroxy-9-(octylamino)octadecanoate (12a)/methyl 9-hydroxy-10-(octylamino)octadecanoate (12b), methyl 10-hydroxy-9-(pyrrolidin-1-yl)octadecanoate (13a)/methyl 9-hydroxy-10-(pyrrolidin-1-yl)octadecanoate (13b), methyl 10-hydroxy-9-(piperidin-1-yl)octadecanoate (14a)/methyl 9-hydroxy-10-(piperidin-1-yl)octadecanoate (14b), methyl 10-hydroxy-9-morpholinooctadecanoate (15a)/methyl 9-hydroxy-10-morpholinooctadecanoate (15b), methyl 9-(4-chlorophenylamino)-10-hydroxyoctadecanoate (16a)/methyl 10-(4-chlorophenylamino)-9-hydroxyoctadecanoate (16b), methyl 10-hydroxy-9-(4-methoxyphenylamino)octadecanoate (17a)/methyl 9-hydroxy-10-(4-methoxyphenylamino)octadecanoate (17b), methyl 9-(benzylamino)-10-hydroxyoctadecanoate (18a)/methyl 10-(benzylamino)-9-hydroxyoctadecanoate (18b), methyl 10-hydroxy-9-(phenylamino)octadecanoate (19a)/methyl 9-hydroxy-10-(phenylamino)octadecanoate (19b)] as isomeric mixtures. Zinc(II) perchlorate hexahydrate was used as a Lewis acid catalyst to achieve these transformations under solvent-free conditions. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901969x [article] Synthesis of β-amino alcohols from methyl epoxy stearate [texte imprimé] / Sukhprit Singh, Auteur ; Raman Kamboj, Auteur . - 2010 . - pp. 3106–3111. Industial Chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 7 (Avril 2010) . - pp. 3106–3111 Mots-clés : Synthesis  β-Amino  Alcohols  Methyl  Epoxy  Stearate Résumé : Oils and fats are an important source of renewable raw materials, and the availability of functionalized fatty acids such as epoxy ring containing fatty acids gives us a convenient source of starting materials for the synthesis of various biodegradable derivatives. Methyl esters of the epoxidized oleic acid [methyl 9,10-epoxy octadecanoate (1)] on the catalytic epoxy ring opening reaction with various aliphatic [butyl (2), octyl (3)], cyclic [pyrrolidine (4), piperidine (5), morpholine (6)], and aromatic [p-chloroaniline (7), p-anisidine (8), benzyl amine (9), aniline (10)] amines resulted in the formation of the respective β-amino alcohols [methyl 9-(butylamino)-10-hydroxyoctadecanoate (11a)/methyl 10-(butylamino)-9-hydroxyoctadecanoate (11b), methyl 10-hydroxy-9-(octylamino)octadecanoate (12a)/methyl 9-hydroxy-10-(octylamino)octadecanoate (12b), methyl 10-hydroxy-9-(pyrrolidin-1-yl)octadecanoate (13a)/methyl 9-hydroxy-10-(pyrrolidin-1-yl)octadecanoate (13b), methyl 10-hydroxy-9-(piperidin-1-yl)octadecanoate (14a)/methyl 9-hydroxy-10-(piperidin-1-yl)octadecanoate (14b), methyl 10-hydroxy-9-morpholinooctadecanoate (15a)/methyl 9-hydroxy-10-morpholinooctadecanoate (15b), methyl 9-(4-chlorophenylamino)-10-hydroxyoctadecanoate (16a)/methyl 10-(4-chlorophenylamino)-9-hydroxyoctadecanoate (16b), methyl 10-hydroxy-9-(4-methoxyphenylamino)octadecanoate (17a)/methyl 9-hydroxy-10-(4-methoxyphenylamino)octadecanoate (17b), methyl 9-(benzylamino)-10-hydroxyoctadecanoate (18a)/methyl 10-(benzylamino)-9-hydroxyoctadecanoate (18b), methyl 10-hydroxy-9-(phenylamino)octadecanoate (19a)/methyl 9-hydroxy-10-(phenylamino)octadecanoate (19b)] as isomeric mixtures. Zinc(II) perchlorate hexahydrate was used as a Lewis acid catalyst to achieve these transformations under solvent-free conditions. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901969x

Synthesis of β-Amino alcohols from terminal epoxy fatty acid methyl ester / Raman Kamboj in Industrial & engineering chemistry research, Vol. 50 N° 13 (Juillet 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 13 (Juillet 2011) . - pp. 8379-8383 Titre : Synthesis of β-Amino alcohols from terminal epoxy fatty acid methyl ester Type de document : texte imprimé Auteurs : Raman Kamboj, Auteur ; Avinash Bhadani, Auteur ; Sukhprit Singh, Auteur Année de publication : 2011 Article en page(s) : pp. 8379-8383 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Fatty  Acid Résumé : Fats and oils are renewable feedstock that can be treated chemically or enzymatically to derive materials that often act as a replacement for petroleum-derived materials. Long-chain fatty epoxides can be transformed to several chemical derivatives. There has been increasing interest in using these substances as intermediates in the production of new biobased industrial materials. In the present work, renewable methyl 10,1 1-epoxyundecanoate were reacted with various cyclic, aliphatic, and aromatic amines in the presence of zinc(II) perchlorate hexahydrate as a Lewis acid catalyst under solvent-free conditions, to derive several new β-amino alcohols in a regioselective manner. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie2005077 [article] Synthesis of β-Amino alcohols from terminal epoxy fatty acid methyl ester [texte imprimé] / Raman Kamboj, Auteur ; Avinash Bhadani, Auteur ; Sukhprit Singh, Auteur . - 2011 . - pp. 8379-8383. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 13 (Juillet 2011) . - pp. 8379-8383 Mots-clés : Fatty  Acid Résumé : Fats and oils are renewable feedstock that can be treated chemically or enzymatically to derive materials that often act as a replacement for petroleum-derived materials. Long-chain fatty epoxides can be transformed to several chemical derivatives. There has been increasing interest in using these substances as intermediates in the production of new biobased industrial materials. In the present work, renewable methyl 10,1 1-epoxyundecanoate were reacted with various cyclic, aliphatic, and aromatic amines in the presence of zinc(II) perchlorate hexahydrate as a Lewis acid catalyst under solvent-free conditions, to derive several new β-amino alcohols in a regioselective manner. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie2005077

Synthesis of β-Bromo Glycerol Monoethers from α-Olefins / Sukhprit Singh in Industrial & engineering chemistry research, Vol. 47 n°21 (Novembre 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 n°21 (Novembre 2008) . - p. 8090–8094 Titre : Synthesis of β-Bromo Glycerol Monoethers from α-Olefins Type de document : texte imprimé Auteurs : Sukhprit Singh, Auteur ; Avinash Bhadani, Auteur ; Raman Kamboj, Auteur Année de publication : 2008 Article en page(s) : p. 8090–8094 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : OlefinsDodeceneHexadecene Résumé : α-Olefins (1-decene (1), 1-dodecene (2), 1-tetradecene (3), 1-hexadecene (4), and 1-octadecene (5)), when reacted with N-bromosuccinimide (NBS (6)) and solketal (7) at 60 °C, followed by deprotection with 10% HCl, are converted into chromatographically inseparable isomeric mixtures of β-bromo monoethers of glycerol: 3-(2-bromoalkyloxy)propane-1,2-diol (13a−17a)/3-(1-bromoalkane-2-yloxy)propane-1,2-diol (13b−17b). En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800718b [article] Synthesis of β-Bromo Glycerol Monoethers from α-Olefins [texte imprimé] / Sukhprit Singh, Auteur ; Avinash Bhadani, Auteur ; Raman Kamboj, Auteur . - 2008 . - p. 8090–8094. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 n°21 (Novembre 2008) . - p. 8090–8094 Mots-clés : OlefinsDodeceneHexadecene Résumé : α-Olefins (1-decene (1), 1-dodecene (2), 1-tetradecene (3), 1-hexadecene (4), and 1-octadecene (5)), when reacted with N-bromosuccinimide (NBS (6)) and solketal (7) at 60 °C, followed by deprotection with 10% HCl, are converted into chromatographically inseparable isomeric mixtures of β-bromo monoethers of glycerol: 3-(2-bromoalkyloxy)propane-1,2-diol (13a−17a)/3-(1-bromoalkane-2-yloxy)propane-1,2-diol (13b−17b). En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800718b

Synthesis of glycerol-based pyridinium surfactants and appraisal of their properties / Sukhprit Singh in Industrial & engineering chemistry research, Vol. 48 N°3 (Février 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N°3 (Février 2009) . - p. 1673–1677 Titre : Synthesis of glycerol-based pyridinium surfactants and appraisal of their properties Type de document : texte imprimé Auteurs : Sukhprit Singh, Auteur ; Avinash Bhadani, Auteur ; Hardeep Kataria, Auteur Année de publication : 2009 Article en page(s) : p. 1673–1677 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Glycerol  Pyridinium  Cationic  surfactants Résumé : β-Bromo glycerol monoethers, when heated with pyridine at 100 °C for 10 h, gave a new glycerol-based pyridinium cationic surfactant, 1-(1-(2,3-dihydroxypropoxy)alkane-2-yl)pyridinium bromide (6a-10a)/1-(2-(2,3-dihydroxypropoxy)alkyl)pyridinium bromide (6b-10b) in a yield of 60%-70%. The surface properties and biocompatibility of these cationic surfactants has been determined and compared to tetradecyl trimethyl ammonium bromide (10) and cetyl pyridinium bromide (11). En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801737m [article] Synthesis of glycerol-based pyridinium surfactants and appraisal of their properties [texte imprimé] / Sukhprit Singh, Auteur ; Avinash Bhadani, Auteur ; Hardeep Kataria, Auteur . - 2009 . - p. 1673–1677. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N°3 (Février 2009) . - p. 1673–1677 Mots-clés : Glycerol  Pyridinium  Cationic  surfactants Résumé : β-Bromo glycerol monoethers, when heated with pyridine at 100 °C for 10 h, gave a new glycerol-based pyridinium cationic surfactant, 1-(1-(2,3-dihydroxypropoxy)alkane-2-yl)pyridinium bromide (6a-10a)/1-(2-(2,3-dihydroxypropoxy)alkyl)pyridinium bromide (6b-10b) in a yield of 60%-70%. The surface properties and biocompatibility of these cationic surfactants has been determined and compared to tetradecyl trimethyl ammonium bromide (10) and cetyl pyridinium bromide (11). En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801737m