[PDF] Top 20 Conjugate Addition of Indoles to α,β Unsaturated Ketones Using Bismuth (III) Bromide
Has 10000 "Conjugate Addition of Indoles to α,β Unsaturated Ketones Using Bismuth (III) Bromide" found on our website. Below are the top 20 most common "Conjugate Addition of Indoles to α,β Unsaturated Ketones Using Bismuth (III) Bromide".
Conjugate Addition of Indoles to α,β Unsaturated Ketones Using Bismuth (III) Bromide
... exhibit. Indoles undergo elec- trophilic substitution at the 3-position and hence a variety of methods have been developed for the synthesis of 3-substituted indoles ...The conjugate addi- tion of ... See full document
6
Total synthesis of (+)-Amberketal, its analogues and development of new methodologies in Ionic Liquids
... underwent conjugate addition to different enones affording their corresponding organosulfur compounds under this reaction condition and the results were presented in the Table ...to α,β- ... See full document
17
Organocatalytic Michael addition–lactonisation of carboxylic acids using α,β unsaturated trichloromethyl ketones as α,β unsaturated ester equivalents
... asymmetric conjugate additions of ammonium and azolium enolates to electron-deficient alkenes have been widely ...of α,β-unsaturated esters and amides as Michael acceptors in such processes ... See full document
12
Ultrasonic study of molecular interactions in some bio liquids
... molecule from that of acrylonitrile by nearly 17%. Due to resonance hybridization of acerolein or acrylonitrile in which the heteroatom (O, N) and the bond between C – N/O, attains a definite double bond character. As ... See full document
5
Development of Enantioselective Organocatalytic Hydrogenation Methods and Progress toward the Total Synthesis of (+)-Minfiensine
... onto α , β -unsaturated aldehyde 7 to provide iminium intermediate 8 ...4). Conjugate reduction by dihydropyridine 9 forms both pyridinium 10 and enamine ...re-protonated conjugate ... See full document
163
Synthetic Study towards Bioactive Natural Macrolides Mycolactone Core, Sorangicin A, Aspergillide B/A, Amphidinolactone A) and Novel Biocompatible Organic Nano Materials.
... δ-hydroxy α,β-unsaturated aldehyde 18 in 84% ...asymmetric α-aminoxylation of the resulting aldehyde by using enantiopure proline as the catalyst and nitrosobenzene as the oxygen source ... See full document
21
SYNTHESIS OF TRISUBSTITUTEDPYRIMIDINES USING IRON (III) PHOSPHATE
... terminal propargyl alcohols and amidinium salts based upon a coupling-isomerization– cyclocondensation sequence, [16] arylation of halogenated pyrimidines via a Suzuki coupling reaction, [17] reaction of a,a-dibromo ... See full document
8
The first stereoselective total synthesis of Z)-Cryptomoscatone D2 and Cu-catalyzed distinct approaches for alkenylation, and alkynylation of heteroarenes along with development of new synthetic methodologies
... BnBr using NaH and TBAI to form the compound ...acetylene using n-BuLi to afford the diastereoisomeric propargylic alcohols 9 (major) and 10 (minor) (with diastereoisomeric ratio ... See full document
13
α,β unsaturated acyl ammonium intermediates in asymmetric organocatalysis
... Use of an electron withdrawing group led to a slight reduction in the regioselectivity but regioisomers 238a/238b were obtained in good yield and enantioselectivity. 4-methoxy substitution was also tolerated and gave ... See full document
239
Regulation of Peptide Hormones
... an α-hydroxyglycine peptide in a biological sample, wherein hydroxyglycine-extended joining peptide from mouse pituitary was ...human α-hydroxyglycine-extended calcitonin (HO-CTG) was chosen as a candidate ... See full document
297
Tetrabutylammonium Bromide: An Efficient Catalyst for the Synthesis of Xanthenediones under Solvent-free Conditions
... All chemical compounds have purchased from Fluka, Romill and Merck companies and used without further purifications. The progress of the reaction was monitored by thin layer chromatography (TLC). Melting points were ... See full document
5
Rh catalyzed arylation of fluorinated ketones with arylboronic acids
... Rh-catalyzed addition of boronic acids to α,β- unsaturated carbonyl compounds (a 1,4-addition process) and aldehydes are well known, 10 the corresponding additions to ketones are ... See full document
5
Aryloxide facilitated catalyst turnover in enantioselective α,β unsaturated acyl ammonium catalysis
... Michael addition of nitroalkanes to a,b- unsaturated p-nitrophenyl esters in generally good yield and with excellent enantioselectivity (27 examples, up to 79 % yield, 99:1 ...a,b- unsaturated acyl ... See full document
7
An Efficient Protocol for the Synthesis of Carboacyclic Nucleosides via Aza-Conjugate Addition Reaction
... In conclusion, we have developed a new method for the aza-conjugate addition of nucleobases to α, -unsaturated esters. This method for the preparation of carboacyclic nucleosides is associated ... See full document
7
alpha Ketophosphonates as ester surrogates : isothiourea catalyzed asymmetric diester and lactone synthesis
... Building on Romo’s pioneering nucleophile- catalyzed aldol lactonization (NCAL) strategy, 12 we have previously studied the isothiourea 13 catalyzed asymmetric functionalization of carboxylic acids 14 via ammonium eno- ... See full document
5
Anti malarial effect of novel chloroquine derivatives as agents for the treatment of malaria
... Results: Novel two derivatives (SKM13 and SKM14) were synthesized based on the chloroquine (CQ) template con‑ taining modified side chains such as α,β‑unsaturated amides and phenylmethyl group. The ... See full document
9
Substrate and cofactor promiscuity of the F₄₂₀ dependent reductases
... an annotated function (according to the NCBI database) found in the same transcriptional unit as an FDR gene characterised herein, had homologues in the same transcriptional unit as all homologues of the FDR in question ... See full document
105
Eco friendly water as a solvent for the one pot synthesis of 2 aminothiazoles
... To a stirred solution of aldehydes (5a-5f) in water at room temperature, was added aqueous hydrobromic acid (48%, 2.0 eq.). The mixture was cooled to 0-10°C and added slowly of aqueous hydrogen peroxide solution (50%, ... See full document
8
SYNTHESIS, CHARACTERIZATION AND ANTIMICROBIAL STUDY OF SOME TRANSITION METAL COMPLEXES OF BIDENTATE CHALCONE LIGAND
... Unsaturated ketones are gaining importance as reactive intermediates and are used to obtain the biologically important ...an α,β-unsaturated system (chalcone) and their presumed role in ... See full document
13
<p>Antileishmanial and antitrypanosomal activity of symmetrical dibenzyl-substituted α,β-unsaturated carbonyl-based compounds</p>
... symmetrical α , β -unsaturated carbonyl-based compounds, each featuring two 3-methoxybenzene attached to a central cyclohexanone, tetrahydro-4-pyranone scaffold or 4-piper- idone ... See full document
7
Related subjects