Efficient ballmill procedure in the `green' asymmetric aldol
2022年1月1日· Ballmilling Green chemistry Asymmetric aldol reaction abstract The organocatalytic activity of (S)prolinebased dipeptides 1aec has been evaluated in theSemantic Scholar extracted view of "Efficient ballmill procedure in the 'green' asymmetric aldol reaction organocatalyzed by (S)prolinecontaining dipeptides in theEfficient ballmill procedure in the 'green' asymmetric aldol
A highly efficient asymmetric organocatalytic aldol reaction in a
2007年6月4日· Antialdol products with up to >99 % enantiomeric excess (ee) have been obtained by proline catalysis in excellent yields under experimentally simple solventfreeEfficient ballmill procedure in the ‘green’asymmetric aldol reaction organocatalyzed by (S)prolinecontaining dipeptides in the presence of water JG Hernández, E JuaristiDr José G Hernández Google Scholar
Organocatalyst Efficiency in the α‐Aminoxylation and α
2017年2月24日· Efficient ballmill procedure in the 'green' asymmetric aldol reaction organocatalyzed by (S) In the presence of pnitrobenzoic acid, the Onitroso aldol reaction of nitrosobenzene with enolisable aldehydes may be promoted by commercially available alpha,alphadiphenylprolinol trimethylsilyl Expand 27Prolinethreonine dipeptide as an organocatalyst for the direct asymmetric aldol reaction Tetrahedron: Asymmetry 2009;20:1742–5; (c) Hernandez JG, Juaristi E Efficient ballmill procedure in the ‘green’ asymmetric aldol reaction organocatalyzed by (S)prolinecontaining dipeptides inRecent advances in reactions promoted by amino acids and
Homochiral bifunctional L‐prolinamide‐ and L‐bis‐prolinamide
2020年11月24日· In this study, the novel bifunctional homochiral thioureaLprolinamides 1–4, tertiary aminoLprolinamide 5, and bisLprolinamides 6 and 7 were prepared from enantiomerically pure (11R,12R)11,12diamino9,10dihydro9,10ethanoanthracene 8 and (11S,12S)11,12diamino9,10dihydro9,10ethanoanthracene ent8HighlyEfficient ballmill procedure in the ‘green’ asymmetric aldol reaction organocatalyzed by (S)prolinecontaining dipeptides in the presence of water × Close Log In Log in with Facebook Log in with Google or PasswordEfficient ballmill procedure in the ‘green’ asymmetric aldol
Proline−β3AminoEster Dipeptides as Efficient Catalysts for
Efficient ballmill procedure in the ‘green’ asymmetric aldol reaction organocatalyzed by (S)prolinecontaining dipeptides in the presence of water Tetrahedron 2011, 67 (36) , 69536959The installation of an imidazolium tag via acetate connection to the C‐4 of cis‐4‐hydroxy‐ L ‐proline provides a highly efficient catalyst for the direct asymmetric aldol reaction, that works in a remarkably low catalyst loading (01 mol%) affording TONs up to 930 in the case of electron‐poor aromatic aldehydes with ee up to >99%The Ion Tag Strategy as a Route to Highly Efficient Organocatalysts
Asymmetric Aldol Reaction Organocatalyzed by (S)Proline
2011年1月20日· Efficient ballmill procedure in the ‘green’ asymmetric aldol reaction organocatalyzed by (S)prolinecontaining dipeptides in the presence of water Tetrahedron 2011, 67, 69536959 DOI: 101016/jtet201106042 Jose G Hernandez, Eusebio Juaristi2009年9月1日· ChemInform Abstract: Efficient BallMill Procedure in the ′Green′ Asymmetric Aldol Reaction Organocatalyzed by (S)ProlineContaining Dipeptides in the Presence of Water Article Sep 2011Use of Prolyl Sulfonimidamides in SolventFree Organocatalytic
A Simple Primary−Tertiary Diamine−Brønsted Acid Catalyst for
2007年2月27日· Efficient ballmill procedure in the ‘green’ asymmetric aldol reaction organocatalyzed by (S)prolinecontaining dipeptides in the presence of water Tetrahedron 2011, DOI: 101016/jtet201106042 Dmitry E Siyutkin, Alexander S Kucherenko, Larisa L Frolova, Alexander V Kuchin, Sergei G ZlotinAldol Reaction A useful carboncarbon bondforming reaction known as the Aldol Reaction is yet another example of electrophilic substitution at the alpha carbon in enolate anions The fundamental transformation in this reaction is a dimerization of an aldehyde (or ketone) to a betahydroxy aldehyde (or ketone) by alpha C–H addition of oneAldol Reaction Chemistry LibreTexts
Brønsted Acids as Additives for the Direct Asymmetric Aldol Reaction
2007年1月10日· Efficient ballmill procedure in the ‘green’ asymmetric aldol reaction organocatalyzed by (S)prolinecontaining dipeptides in the presence of water Tetrahedron 2011, DOI: 101016/jtet201106042 Subodh Kumar, Sanny Verma, Suman L2009年5月7日· Efficient ballmill procedure in the ‘green’ asymmetric aldol reaction organocatalyzed by (S)prolinecontaining dipeptides in the presence of water Tetrahedron 2011 , 67 (36) , 69536959Highly Efficient Small Organic Molecules for Enantioselective
Efficient ballmill procedure in the `green' asymmetric aldol reaction
2022年1月1日· Efficient ballmill procedure in the ‘green’ asymmetric aldol reaction organocatalyzed by (S)prolinecontaining dipeptides in the presence of water Jose G Hern andez, Eusebio Juaristi * Departamento de Química, Centro de Investigacion y de Estudios Avanzados del Instituto Politecnico Nacional, Apartado Postal 14e740, 07000 Mexico DFEfficient ballmill procedure in the ‘green’ asymmetric aldol reaction organocatalyzed by ( S)prolinecontaining dipeptides in Their catalytic activities were examined in enantioselective crossed aldol reaction of various acyclic and cyclic ketones with aromatic aldehydes to afford the corresponding chiral antialdol adducts with(PDF) Solventfree asymmetric aldol reaction organocatalyzed
New organocatalysts derived from tetrahydropapaverine for
2022年4月15日· ChemInform Abstract: Efficient BallMill Procedure in the ′Green′ Asymmetric Aldol Reaction Organocatalyzed by (S)ProlineContaining Dipeptides in the Presence of Water Article Sep 2011Efficient ballmill procedure in the ‘green’asymmetric aldol reaction organocatalyzed by (S)prolinecontaining dipeptides in the presence of water JG Hernández, E Juaristi Tetrahedron 67 (36), 69536959 , 2011Eusebio Juaristi Google Scholar
Reacciones asimétricas organocatalizadas en ausencia de
2013年3月1日· Efficient ballmill procedure in the ‘green’ asymmetric aldol reaction organocatalyzed by (S)prolinecontaining dipeptides in the presence of water A highly efficient asymmetric organocatalytic aldol reaction in a ball mill Chem Eur J, 13 (2007), pp 47104722 CrossRef View in Scopus Google Scholar Samanta et al, 2005The aldol reaction is catalyzed by strong acid or base [3,4], complexes of metal (II) ions [5], Lewis acids [6–11] and various other reagents [12–16] However, Efficient ballmill procedure in the ‘green’ asymmetric aldol reaction organocatalyzed by ( S)prolinecontaining dipeptides in the presence of water 2011 •Sulfamic acid: An efficient, costeffective and green catalyst for
ChemInform Abstract: SolventFree Asymmetric Aldol Reaction
Efficient ballmill procedure in the ‘green’ asymmetric aldol reaction organocatalyzed by ( S)prolinecontaining dipeptides in the presence of water 2011 • dipeptides and thiodipeptides are prepared and applied as catalysts for the asymmetric aldol reaction under solventfree conditions using the High Speed BallMilling tech niqueSolvent Effects on the Aldol Reaction of substituted Merrifield resin with an Opropargyl hydroxy Cyclohexanone with Benzaldehyde Catalyzed by Resin 1 proline derivative was envisaged Efficient ballmill procedure in the ‘green’ asymmetric aldol reaction organocatalyzed by ( S)prolinecontaining dipeptides in the presence ofAcademiaedu OrgLett 2006 8 4653 Polystyrenesupported
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Efficient ballmill procedure in the `green' asymmetric aldol
2022年1月1日· Ballmilling Green chemistry Asymmetric aldol reaction abstract The organocatalytic activity of (S)prolinebased dipeptides 1aec has been evaluated in theSemantic Scholar extracted view of "Efficient ballmill procedure in the 'green' asymmetric aldol reaction organocatalyzed by (S)prolinecontaining dipeptides in theEfficient ballmill procedure in the 'green' asymmetric aldol
A highly efficient asymmetric organocatalytic aldol reaction in a
2007年6月4日· Antialdol products with up to >99 % enantiomeric excess (ee) have been obtained by proline catalysis in excellent yields under experimentally simple solventfreeEfficient ballmill procedure in the ‘green’asymmetric aldol reaction organocatalyzed by (S)prolinecontaining dipeptides in the presence of water JG Hernández, E JuaristiDr José G Hernández Google Scholar
Organocatalyst Efficiency in the α‐Aminoxylation and α
2017年2月24日· Efficient ballmill procedure in the 'green' asymmetric aldol reaction organocatalyzed by (S) In the presence of pnitrobenzoic acid, the Onitroso aldol reaction of nitrosobenzene with enolisable aldehydes may be promoted by commercially available alpha,alphadiphenylprolinol trimethylsilyl Expand 27Prolinethreonine dipeptide as an organocatalyst for the direct asymmetric aldol reaction Tetrahedron: Asymmetry 2009;20:1742–5; (c) Hernandez JG, Juaristi E Efficient ballmill procedure in the ‘green’ asymmetric aldol reaction organocatalyzed by (S)prolinecontaining dipeptides inRecent advances in reactions promoted by amino acids and
Homochiral bifunctional L‐prolinamide‐ and L‐bis‐prolinamide
2020年11月24日· In this study, the novel bifunctional homochiral thioureaLprolinamides 1–4, tertiary aminoLprolinamide 5, and bisLprolinamides 6 and 7 were prepared from enantiomerically pure (11R,12R)11,12diamino9,10dihydro9,10ethanoanthracene 8 and (11S,12S)11,12diamino9,10dihydro9,10ethanoanthracene ent8HighlyEfficient ballmill procedure in the ‘green’ asymmetric aldol reaction organocatalyzed by (S)prolinecontaining dipeptides in the presence of water × Close Log In Log in with Facebook Log in with Google or PasswordEfficient ballmill procedure in the ‘green’ asymmetric aldol
Proline−β3AminoEster Dipeptides as Efficient Catalysts for
Efficient ballmill procedure in the ‘green’ asymmetric aldol reaction organocatalyzed by (S)prolinecontaining dipeptides in the presence of water Tetrahedron 2011, 67 (36) , 69536959The installation of an imidazolium tag via acetate connection to the C‐4 of cis‐4‐hydroxy‐ L ‐proline provides a highly efficient catalyst for the direct asymmetric aldol reaction, that works in a remarkably low catalyst loading (01 mol%) affording TONs up to 930 in the case of electron‐poor aromatic aldehydes with ee up to >99%The Ion Tag Strategy as a Route to Highly Efficient Organocatalysts
Asymmetric Aldol Reaction Organocatalyzed by (S)Proline
2011年1月20日· Efficient ballmill procedure in the ‘green’ asymmetric aldol reaction organocatalyzed by (S)prolinecontaining dipeptides in the presence of water Tetrahedron 2011, 67, 69536959 DOI: 101016/jtet201106042 Jose G Hernandez, Eusebio Juaristi2009年9月1日· ChemInform Abstract: Efficient BallMill Procedure in the ′Green′ Asymmetric Aldol Reaction Organocatalyzed by (S)ProlineContaining Dipeptides in the Presence of Water Article Sep 2011Use of Prolyl Sulfonimidamides in SolventFree Organocatalytic
A Simple Primary−Tertiary Diamine−Brønsted Acid Catalyst for
2007年2月27日· Efficient ballmill procedure in the ‘green’ asymmetric aldol reaction organocatalyzed by (S)prolinecontaining dipeptides in the presence of water Tetrahedron 2011, DOI: 101016/jtet201106042 Dmitry E Siyutkin, Alexander S Kucherenko, Larisa L Frolova, Alexander V Kuchin, Sergei G ZlotinAldol Reaction A useful carboncarbon bondforming reaction known as the Aldol Reaction is yet another example of electrophilic substitution at the alpha carbon in enolate anions The fundamental transformation in this reaction is a dimerization of an aldehyde (or ketone) to a betahydroxy aldehyde (or ketone) by alpha C–H addition of oneAldol Reaction Chemistry LibreTexts
Brønsted Acids as Additives for the Direct Asymmetric Aldol Reaction
2007年1月10日· Efficient ballmill procedure in the ‘green’ asymmetric aldol reaction organocatalyzed by (S)prolinecontaining dipeptides in the presence of water Tetrahedron 2011, DOI: 101016/jtet201106042 Subodh Kumar, Sanny Verma, Suman L2009年5月7日· Efficient ballmill procedure in the ‘green’ asymmetric aldol reaction organocatalyzed by (S)prolinecontaining dipeptides in the presence of water Tetrahedron 2011 , 67 (36) , 69536959Highly Efficient Small Organic Molecules for Enantioselective
Efficient ballmill procedure in the `green' asymmetric aldol reaction
2022年1月1日· Efficient ballmill procedure in the ‘green’ asymmetric aldol reaction organocatalyzed by (S)prolinecontaining dipeptides in the presence of water Jose G Hern andez, Eusebio Juaristi * Departamento de Química, Centro de Investigacion y de Estudios Avanzados del Instituto Politecnico Nacional, Apartado Postal 14e740, 07000 Mexico DFEfficient ballmill procedure in the ‘green’ asymmetric aldol reaction organocatalyzed by ( S)prolinecontaining dipeptides in Their catalytic activities were examined in enantioselective crossed aldol reaction of various acyclic and cyclic ketones with aromatic aldehydes to afford the corresponding chiral antialdol adducts with(PDF) Solventfree asymmetric aldol reaction organocatalyzed
New organocatalysts derived from tetrahydropapaverine for
2022年4月15日· ChemInform Abstract: Efficient BallMill Procedure in the ′Green′ Asymmetric Aldol Reaction Organocatalyzed by (S)ProlineContaining Dipeptides in the Presence of Water Article Sep 2011Efficient ballmill procedure in the ‘green’asymmetric aldol reaction organocatalyzed by (S)prolinecontaining dipeptides in the presence of water JG Hernández, E Juaristi Tetrahedron 67 (36), 69536959 , 2011Eusebio Juaristi Google Scholar
Reacciones asimétricas organocatalizadas en ausencia de
2013年3月1日· Efficient ballmill procedure in the ‘green’ asymmetric aldol reaction organocatalyzed by (S)prolinecontaining dipeptides in the presence of water A highly efficient asymmetric organocatalytic aldol reaction in a ball mill Chem Eur J, 13 (2007), pp 47104722 CrossRef View in Scopus Google Scholar Samanta et al, 2005The aldol reaction is catalyzed by strong acid or base [3,4], complexes of metal (II) ions [5], Lewis acids [6–11] and various other reagents [12–16] However, Efficient ballmill procedure in the ‘green’ asymmetric aldol reaction organocatalyzed by ( S)prolinecontaining dipeptides in the presence of water 2011 •Sulfamic acid: An efficient, costeffective and green catalyst for
ChemInform Abstract: SolventFree Asymmetric Aldol Reaction
Efficient ballmill procedure in the ‘green’ asymmetric aldol reaction organocatalyzed by ( S)prolinecontaining dipeptides in the presence of water 2011 • dipeptides and thiodipeptides are prepared and applied as catalysts for the asymmetric aldol reaction under solventfree conditions using the High Speed BallMilling tech niqueSolvent Effects on the Aldol Reaction of substituted Merrifield resin with an Opropargyl hydroxy Cyclohexanone with Benzaldehyde Catalyzed by Resin 1 proline derivative was envisaged Efficient ballmill procedure in the ‘green’ asymmetric aldol reaction organocatalyzed by ( S)prolinecontaining dipeptides in the presence ofAcademiaedu OrgLett 2006 8 4653 Polystyrenesupported
maquina trituradora de entulho pre o كسارة الحجارة عالية الجودة طحن كرات الوسائط من الهند مصنع الرمل الصخري الجرانيت hand crusher for gold ore online coal purchasing شراء طاحونة فحم حجري طاحن الفحم نوع الأسطوانة چرخ کتابچه راهنمای کاربر كهف خام محطم طحن cotton seed oil crushing machine صخور الفوسفات مطاحن الأسطوانة العمودية الهند آلة طحن وتلميع أرضية رخامية js 580 مصنع تربية الدجاج في الصين آلات تصنيع الرمل الصناعي في الجزائرch ماكينات لقص الشعراوي المغذي الكهرومغناطيسي في شنغهاي مؤسسة الطواحين الهولندية بيع كسارة مخروطية أذربيجان توالت تدفق دردشة محطم معدات تعدين الذهب على نطاق صغير للبيع زيمبابوي manufacturing machine in nigeria 24799 مخطط تدفق معالجة خام الذهب على نطاق صغير تصنيع غربال السبوع حار بيع خام الحديد كسارة تصادمية متنقلة للمقلع الذهب الخام المطرقة مطحنة المقطع العرضي الرسم البياني كتيب الاسمنت دودا سيل تستخدم كسارة الصدم hac سوق اسعار الة طحن تغذية الاغنام بسيدى ب قوة المحرك حساب تهتز المغذية و تهتز الشاشةQUICK LINKS
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