62547-72-2Relevant academic research and scientific papers
Access to β-Hydroxyl Esters via Copper-Catalyzed Reformatsky Reaction of Ketones and Aldehydes
Ouyang, Lu,Liao, Jian Hua,Xia, Yan Ping,Luo, Ren Shi
supporting information, p. 1418 - 1422 (2020/10/02)
An efficient and simple Cu-catalyzed Reformatsky reaction of ketones and aldehydes has been accomplished with ethyl iodoacetate. Excellent yields of β-hydroxyl esters were achieved with a range of ketones and aldehydes, which varied from aromatic to aliphatic, unsaturated to saturated ketones and aldehydes. This practical and convenient transformation was conducted with inexpensive, readily available, and commercial starting materials under mild reaction conditions.
A Ball-Milling-Enabled Reformatsky Reaction
Cao, Qun,Stark, Roderick T.,Fallis, Ian A.,Browne, Duncan L.
, p. 2554 - 2557 (2019/06/17)
An operationally simple one-jar one-step mechanochemical Reformatsky reaction using in situ generated organozinc intermediates under neat grinding conditions has been developed. Notable features of this reaction protocol are that it requires no solvent, no inert gases, and no pre-activation of the bulk zinc source. The developed process is demonstrated to have good substrate scope (39–82 % yield) and is effective irrespective of the initial morphology of the zinc source.
Iron(0)-Mediated Reformatsky Reaction for the Synthesis of β-Hydroxyl Carbonyl Compounds
Liu, Xuan-Yu,Li, Xiang-Rui,Zhang, Chen,Chu, Xue-Qiang,Rao, Weidong,Loh, Teck-Peng,Shen, Zhi-Liang
supporting information, p. 5873 - 5878 (2019/08/20)
An efficient, economical, and practical Reformatsky reaction of α-halo carbonyl compounds with aldehydes/ketones by using cheap and commercial iron(0) powder as reaction mediator is developed. The reactions proceeded effectively in the presence of a catalytic amount of iodine (20 mol %) to afford the synthetically useful β-hydroxyl carbonyl compounds in moderate to good yields.
One-pot enol silane formation-Mukaiyama aldol reactions: Crossed aldehyde-aldehyde coupling, thioester substrates, and reactions in ester solvents
Downey, C. Wade,Dixon, Grant J.,Ingersoll, Jared A.,Fuller, Claire N.,MacCormac, Kenneth W.,Takashima, Anna,Sediqui, Rohina
supporting information, (2019/10/14)
Trimethylsilyl trifluoromethanesulfonate (TMSOTf) and a trialkylamine base promote both in situ enol silane/silyl ketene acetal formation and Mukaiyama aldol addition reactions between a variety of reaction partners in a single reaction flask. Isolation of the required enol silane or silyl ketene acetal is not necessary. For example, crossed aldol reactions between α-disubstituted aldehydes and non-enolizable aldehydes yield β-hydroxy aldehydes in good yield. In a related reaction, the common laboratory solvent ethyl acetate functions as both an enolate precursor and a green reaction solvent. When thioesters are employed as enolate precursors, high yields for additions to non-enolizable aldehydes are routinely observed.
Method for preparing β - hydroxyl carbonyl compound (by machine translation)
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Paragraph 0062-0066, (2019/10/01)
The present invention relates to a process for preparing β - hydroxycarbonyl compounds, which mainly provides a process for the reaction, using inexpensive commercial iron powder-mediated α -halocarbonyl compounds with aldehydes/ketones, to provide the corresponding β - hydroxycarbonyl compound . the present invention relates to a method. The process is good, has wide functional group tolerance and good compatibility. (by machine translation)
N-heterocyclic carbene mediated Reformatsky reaction of aldehydes with a-trimethylsilylcarbonyl compounds
Zou, Xiao-Lei,Du, Guang-Fen,Sun, Wan-Fu,He, Lin,Ma, Xiao-Wei,Gu, Cheng-Zhi,Dai, Bin
, p. 607 - 612 (2013/07/27)
N-Heterocyclic carbenes have been employed as highly efficient organocatalysts to mediate silyl-Reformatsky type reaction. In the presence of only 0.5 mol % nucleophilic carbene 1, various aldehydes coupled with α-trimethylsilylethylacetate very smoothly in DMF at room temperature to provide the corresponding β-hydroxyesters in moderate to high yields. α-Trimethylsilylketone and α-trimethylsilylamide can also undergo the addition reaction to give β-hydroxyketone and b-hydroxyamide in moderate yields.
Cp2ZrCl2-induced Reformatsky and Barbier reactions on isatins: An efficient synthesis of 3-substituted-3-hydroxyindolin-2-ones
Chouhan, Mangilal,Sharma, Ratnesh,Nair, Vipin A.
experimental part, p. 470 - 475 (2012/02/01)
A mild and rapid one-pot process for Reformatsky and Barbier reactions using a catalytic quantity of zirconocene dichloride (Cp2ZrCl 2) as a promoter and zinc as a terminal reductant at room temperature in dimethyl formamide was developed. The protocol has wide substrate suitability and afforded the desired 3-substituted-3-hydroxyindolin-2-ones from istains in good yields and short reaction time.
P(i-PrNCH2CH2)3N: Efficient catalyst for synthesizing β-hydroxyesters and α,β-unsaturated esters using α-trimethylsilylethylacetate (TMSEA)
Wadhwa, Kuldeep,Verkade, John G.
supporting information; experimental part, p. 4368 - 4371 (2009/09/06)
(Chemical Equation Presented) We present an efficient synthesis of β-hydroxyesters and R,β-unsaturated esters via activation of the silicon-carbon bond of α-trimethylsilylethylacetate using catalytic amounts of the commercially available P(i-PrNCH2CH2) 3N 1a. Selectivity for either of these two products can be achieved simply by altering the catalyst loading and reaction temperature to afford addition or stereoselective condensation. This method is mild and tolerates a wide array of functional groups.
Dimethylzinc-mediated, oxidatively promoted Reformatsky reaction of ethyl iodoacetate with aldehydes and ketones
Cozzi, Pier Giorgio,Mignogna, Alessandro,Vicennati, Paola
supporting information; experimental part, p. 975 - 978 (2009/05/27)
A practical and general Reformatsky reaction, promoted by oxidants and mediated by dimethylzinc, is described. The reaction is fast and runs at 0°C with aldehydes and ketones, under mild reaction conditions. Preliminary results obtained for the enantioselective version show that inexpensive chiral amino alcohols could be used in the challenging formation of enantioenriched quaternary stereogenic centers.
Solvent-free synthesis of β-hydroxy esters and β-amino esters by indium-mediated reformatsky reaction
Chen, Xi'an,Zhang, Changfu,Wu, Huayue,Yu, Xiaochun,Su, Weike,Cheng, Jiang
, p. 3233 - 3239 (2008/09/16)
In a convenient and efficient procedure for the solvent-free synthesis of β-hydroxy esters and β-amino esters, various aldehydes and aldimines undergo a Reformatsky reaction mediated by non-activated indium at room temperature to give the corresponding esters in good to excellent yields. Georg Thieme Verlag Stuttgart.
