343871-08-9Relevant academic research and scientific papers
An Industrial Perspective on Counter Anions in Gold Catalysis: Underestimated with Respect to “Ligand Effects”
Schie?l, Jasmin,Schulmeister, Jürgen,Doppiu, Angelino,W?rner, Eileen,Rudolph, Matthias,Karch, Ralf,Hashmi, A. Stephen K.
, p. 2493 - 2502 (2018)
The conversion of a variety of well-known test reactions, representing the key reactivity patterns of gold catalysis, were analyzed by GC and 1H NMR. The study is focused on establishing of a strategical approach for the consideration of ligand
Complex Polyheterocycles and the Stereochemical Reassignment of Pileamartine A via Aza-Heck Triggered Aryl C-H Functionalization Cascades
Bower, John F.,Caiger, Lewis,García-Cárceles, Javier,Hazelden, Ian R.,Jones, Benjamin T.,Langer, Thomas,Lewis, Richard J.
, p. 15593 - 15598 (2021/10/12)
Structurally complex benzo- and spiro-fused N-polyheterocycles can be accessed via intramolecular Pd(0)-catalyzed alkene 1,2-aminoarylation reactions. The method uses N-(pentafluorobenzoyloxy)carbamates as the initiating motif, and this allows aza-Heck-type alkene amino-palladation in advance of C-H palladation of the aromatic component. The chemistry is showcased in the first total synthesis of the complex alkaloid (+)-pileamartine A, which has resulted in the reassignment of its absolute stereochemistry.
An Industrial Perspective on Counter Anions in Gold Catalysis: On Alternative Counter Anions
Schie?l, Jasmin,Schulmeister, Jürgen,Doppiu, Angelino,W?rner, Eileen,Rudolph, Matthias,Karch, Ralf,Hashmi, A. Stephen K.
, p. 3949 - 3959 (2018/09/06)
A comparison of versatile counter anions was investigated by means of a variety of well-known test reactions representing the key reactivity patterns of homogeneous gold catalysis, the catalytic activity was monitored by GC and 1H NMR. As previ
The bioinspired design of a reagent allows the functionalization of Cα-H of α,β-unsaturated carbonyl compounds via the Baylis-Hillman chemistry under ambient conditions
Singh, Palwinder,Kumar, Arun,Kaur, Sukhmeet,Kaur, Jagroop,Singh, Harpreet
supporting information, p. 2936 - 2939 (2016/02/20)
A rationally designed reagent capable of affecting alkylation at Cα of α,β-unsaturated carbonyl compounds is reported. The reaction proceeded at room temperature without any additives. The pH and H-bond formation during the reaction play a key role in the working of the reagent.
METHOD FOR THE PREPARATION OF alpha-SUBSTITUTED ACRYL ALDEHYDES
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Paragraph 0119, (2016/04/19)
The invention discloses simple and rapid method for the preparation of α-substituted acryl aldehydes. More particularly, the invention discloses a method for the preparation of α-substituted acryl aldehydes via a gold-catalysed [1,3] rearrangement of the allenyl ethers with a record turnover frequency of 4600 h?1 at 0.05 mol % of the catalyst concentration in homogeneous gold(I) catalysis. The α-substituted acryl aldehydes synthesized by the instant process are used as building blocks in organic synthesis.
Gold(i)-catalysed [1,3] O→C rearrangement of allenyl ethers
Kona, Chandrababu Naidu,Ramana, Chepuri V.
supporting information, p. 2152 - 2154 (2014/02/14)
A simple and rapid access to the α-substituted acryl aldehydes has been provided by developing a gold-catalysed [1,3] rearrangement of the allenyl ethers importantly with a record turnover frequency of 4600 h-1 (at 0.05 mol% of the catalyst concentration) in homogeneous gold(i) catalysis. The Royal Society of Chemistry.
Chiral primary amine catalyzed asymmetric epoxidation of α-substituted acroleins
Li, Jiuyuan,Fu, Niankai,Zhang, Long,Zhou, Pengxin,Luo, Sanzhong,Cheng, Jin-Pei
supporting information; experimental part, p. 6840 - 6849 (2011/03/19)
1,1-Disubstituted terminal alkenes remain challenging substrates in asymmetric epoxidation reactions. In this study, chiral primary amines are shown to catalyze the asymmetric epoxidation of α-substituted acroleins, a versatile type of 1,1-disubstituted t
