ChemInform Abstract: N-Heterocyclic Carbene Catalyzed Reaction of Enals and Diaryl-1,2 Diones via...

1
2008 Furan derivatives R 0060 N-Heterocyclic Carbene Catalyzed Reaction of Enals and Diaryl-1,2 Diones via Homoenolate: Synthesis of 4,5,5-Trisubstituted γ-Butyrolactones. — 1,2-Diaryl- -1,2-diones react with cinnamic aldehydes in the presence of nucleophilic heterocyclic carbene catalyst to give mixtures of the desired butyrolactones. Yield and diastereose- lectivity depend on the dione substrate. — (NAIR*, V.; VELLALATH, S.; POONOTH, M.; SURESH, E.; VIJI, S.; Synthesis 2007, 20, 3195-3200; Org. Chem. Sect., Reg. Res. Lab., CSIR, Trivandrum 695 019, Kerala, India; Eng.) — Mais 08- 112

Transcript of ChemInform Abstract: N-Heterocyclic Carbene Catalyzed Reaction of Enals and Diaryl-1,2 Diones via...

Page 1: ChemInform Abstract: N-Heterocyclic Carbene Catalyzed Reaction of Enals and Diaryl-1,2 Diones via Homoenolate: Synthesis of 4,5,5-Trisubstituted γ-Butyrolactones.

2008

Furan derivativesR 0060 N-Heterocyclic Carbene Catalyzed Reaction of Enals and Diaryl-1,2 Diones via

Homoenolate: Synthesis of 4,5,5-Trisubstituted γ-Butyrolactones. — 1,2-Diaryl--1,2-diones react with cinnamic aldehydes in the presence of nucleophilic heterocyclic carbene catalyst to give mixtures of the desired butyrolactones. Yield and diastereose-lectivity depend on the dione substrate. — (NAIR*, V.; VELLALATH, S.; POONOTH, M.; SURESH, E.; VIJI, S.; Synthesis 2007, 20, 3195-3200; Org. Chem. Sect., Reg. Res. Lab., CSIR, Trivandrum 695 019, Kerala, India; Eng.) — Mais

08- 112

Chiral N-Heterocyclic Carbene–Catalyzed Generation … Mesh) using a forced flow of 0.5–1.0 bar. 1H NMR and 13C NMR were measured on Bruker Avance II 500 MHz, 125 MHz respectively.

Chiral N-Heterocyclic Carbene–Catalyzed Generation … Mesh) using a forced flow of 0.5–1.0 bar. 1H NMR and 13C NMR were measured on Bruker Avance II 500 MHz, 125 MHz respectively.

Heterocyclic Aromatic Compounds - KFUPM · 2014. 8. 17. · 5 Bonding in Polycyclic Aromatic Compounds • In benzene, all C-C bond lengths are equal ( equal distribution of pi electrons

Heterocyclic Aromatic Compounds - KFUPM · 2014. 8. 17. · 5 Bonding in Polycyclic Aromatic Compounds • In benzene, all C-C bond lengths are equal ( equal distribution of pi electrons

Advanced Synthesis and Catalysis ─ Carbene Chen · dienophiles. The Diels–Alder reaction product of alkynyl ... reagent is synthetically equivalent to Cp 2 Ti=CH 2. Chen Tebbe’s

Advanced Synthesis and Catalysis ─ Carbene Chen · dienophiles. The Diels–Alder reaction product of alkynyl ... reagent is synthetically equivalent to Cp 2 Ti=CH 2. Chen Tebbe’s

Supplementary Materials - Royal Society of Chemistry · Supplementary Materials Imidazo[1,5-a]pyridin-3-ylidenes as π-Accepting Carbene Ligands: Substituent Effects on Properties

Supplementary Materials - Royal Society of Chemistry · Supplementary Materials Imidazo[1,5-a]pyridin-3-ylidenes as π-Accepting Carbene Ligands: Substituent Effects on Properties

Polycyclic and Heterocyclic Aromatic Compounds

Polycyclic and Heterocyclic Aromatic Compounds

Organocatalysis Enabled by N-Heterocyclic Carbenes · Organocatalysis Enabled by N-Heterocyclic Carbenes Jiaming Li 2018/04/27 Acyl Anions Y XN Homoenolates Acylazolium Azolium enolate

Organocatalysis Enabled by N-Heterocyclic Carbenes · Organocatalysis Enabled by N-Heterocyclic Carbenes Jiaming Li 2018/04/27 Acyl Anions Y XN Homoenolates Acylazolium Azolium enolate

α-N-Heterocyclic Thiosemicarbazone Derivatives as ...ijrar.org/papers/IJRAR_223975.docx  · Web viewThe battery backup supply of 12V, 7 AH helps this system to run when there is

α-N-Heterocyclic Thiosemicarbazone Derivatives as ...ijrar.org/papers/IJRAR_223975.docx  · Web viewThe battery backup supply of 12V, 7 AH helps this system to run when there is

Chiral N-heterocyclic carbene-catalyzed generation of ...Chiral N-heterocyclic carbene-catalyzed generation of ester enolate equivalents from α,β-unsaturated aldehydes for enantioselective

Chiral N-heterocyclic carbene-catalyzed generation of ...Chiral N-heterocyclic carbene-catalyzed generation of ester enolate equivalents from α,β-unsaturated aldehydes for enantioselective

(Katalin E. Kövér) K. E. Kövér 1st, Vol. 3, Issue 2,web.unideb.hu/koverk/Publ_2006_EK_dragon.pdf · 2006-05-02 · Heterocyclic Compounds from Sugars. XIV* - Structure Determination

(Katalin E. Kövér) K. E. Kövér 1st, Vol. 3, Issue 2,web.unideb.hu/koverk/Publ_2006_EK_dragon.pdf · 2006-05-02 · Heterocyclic Compounds from Sugars. XIV* - Structure Determination

Synthesis of substituted isoquinolines utilizing palladium ... · tioned on the heterocyclic ring of the resulting isoquinoline were investigated (Scheme 2). A range of ketones were

Synthesis of substituted isoquinolines utilizing palladium ... · tioned on the heterocyclic ring of the resulting isoquinoline were investigated (Scheme 2). A range of ketones were

Piridinas. Generalidadesdepa.fquim.unam.mx/amyd/archivero/PIRIDINAS_31961.pdf · 2015. 11. 13. · Generalidades. Ejemplos. pKa E.F.V. Scriven in Comprehensive Heterocyclic Chemistry.

Piridinas. Generalidadesdepa.fquim.unam.mx/amyd/archivero/PIRIDINAS_31961.pdf · 2015. 11. 13. · Generalidades. Ejemplos. pKa E.F.V. Scriven in Comprehensive Heterocyclic Chemistry.

Heterocyclic Aromatic Compounds - Faculty Personal Homepage- KFUPM

Heterocyclic Aromatic Compounds - Faculty Personal Homepage- KFUPM

Chapter 4webpages.iust.ac.ir/naimi/Lectures/Heterocyclic Chemistry/Chapter 4... · Chapter 4 N O S Ring Synthesis of Aromatic Heterocycles 1 . 2 6.1 Reaction Types Most Frequently

Chapter 4webpages.iust.ac.ir/naimi/Lectures/Heterocyclic Chemistry/Chapter 4... · Chapter 4 N O S Ring Synthesis of Aromatic Heterocycles 1 . 2 6.1 Reaction Types Most Frequently

Achieving elusive transformations with organocatalysis: direct ......Key words: Organocatalysis, N-heterocyclic carbenes, sp3 carbon activation, regioselectivity, photoredox catalysis

Achieving elusive transformations with organocatalysis: direct ......Key words: Organocatalysis, N-heterocyclic carbenes, sp3 carbon activation, regioselectivity, photoredox catalysis

SYNTHESIS, CHARACTERIZATION AND BIOLOGICAL ...shodhganga.inflibnet.ac.in/bitstream/10603/14149/13/13...BIOLOGICAL EVALUATION OF SOME NEW 1, 3, 5-TRISUBSTITUTED-2- PYRAZOLINES CHAPTER

SYNTHESIS, CHARACTERIZATION AND BIOLOGICAL ...shodhganga.inflibnet.ac.in/bitstream/10603/14149/13/13...BIOLOGICAL EVALUATION OF SOME NEW 1, 3, 5-TRISUBSTITUTED-2- PYRAZOLINES CHAPTER

Supporting Information - Royal Society of Chemistry · Supporting Information N-Heterocyclic Carbene-Catalyzed [3+2] Annulation of Bromoenals with 3-Aminooxindoles: Highly Enantioselective

Supporting Information - Royal Society of Chemistry · Supporting Information N-Heterocyclic Carbene-Catalyzed [3+2] Annulation of Bromoenals with 3-Aminooxindoles: Highly Enantioselective

α-N-Heterocyclic Thiosemicarbazone Derivatives as ...€¦  · Web viewHerein, we describe the pharmacokinetic (PK) features, activity, efficiency as well as toxicity profile of

α-N-Heterocyclic Thiosemicarbazone Derivatives as ...€¦  · Web viewHerein, we describe the pharmacokinetic (PK) features, activity, efficiency as well as toxicity profile of

Supporting Information - rsc.org filedecompose and release dinitrogen, acetone and carbene 12.1 In Pathway A, nucleophilic addition of in situ generated 12 to the C=O bond would generate

Supporting Information - rsc.org filedecompose and release dinitrogen, acetone and carbene 12.1 In Pathway A, nucleophilic addition of in situ generated 12 to the C=O bond would generate

Nucleophilic Substitution of Hydrogen in Heterocyclic Chemistryorganic.chem.univ.kiev.ua/upload/metod_electrofil... · 2012-01-25 · Nucleophilic Substitution of Hydrogen in Heterocyclic

Nucleophilic Substitution of Hydrogen in Heterocyclic Chemistryorganic.chem.univ.kiev.ua/upload/metod_electrofil... · 2012-01-25 · Nucleophilic Substitution of Hydrogen in Heterocyclic

Aromaticity of heterocyclic compounds. Characteristics of aromatic compounds: 1.The structure must be cyclic with conjugated π bonds.π 2.All atoms must.

Aromaticity of heterocyclic compounds. Characteristics of aromatic compounds: 1.The structure must be cyclic with conjugated π bonds.π 2.All atoms must.