106675-70-1Relevant articles and documents
Asymmetric Transfer Hydrogenation of α-Keto Amides; Highly Enantioselective Formation of Malic Acid Diamides and α-Hydroxyamides
Gediya, Shweta K.,Vyas, Vijyesh K.,Clarkson, Guy J.,Wills, Martin
supporting information, p. 7803 - 7807 (2021/10/20)
The asymmetric transfer hydrogenation (ATH) of α-keto-1,4-diamides using a tethered Ru/TsDPEN catalyst was achieved in high ee. Studies on derivatives identified the structural elements which lead to the highest enantioselectivities in the products. The α-keto-amide reduction products have been converted to a range of synthetically valuable derivatives.
Preparation method of natural product resveratrol dimer diphosphate derivative
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Paragraph 0016-0017, (2021/09/04)
The invention belongs to the technical field of chemical synthesis, and particularly relates to a preparation method of a natural product resveratrol dimer diphosphate derivative. The method comprises the following steps: performing two-step condensation
One-pot transition-metal-free synthesis of weinreb amides directly from carboxylic acids
Niu, Teng,Wang, Ke-Hu,Huang, Danfeng,Xu, Changming,Su, Yingpeng,Hu, Yulai,Fu, Ying
, p. 320 - 330 (2014/02/14)
Weinreb amides were prepared directly from carboxylic acids, N,O-dimethylhydroxylamine, and phosphorus trichloride in one pot at 60 °C in toluene in high yields, thus avoiding the separation of the moisture and air sensitive intermediate P[NMe(OMe)]3 in advance. Sterically hindered carboxylic acids also give the corresponding Weinreb amides in excellent yields. Various functional groups are tolerated on the carboxylic acid. The method, which is a simple process and gives high yields, is suitable for large-scale production. Georg Thieme Verlag KG Stuttgart · New York.
Synthesis of the NK1 receptor antagonist GW597599. Part 1: development of a scalable route to a key chirally pure arylpiperazine
Guercio, Giuseppe,Bacchi, Sergio,Goodyear, Michael,Carangio, Antonella,Tinazzi, Francesco,Curti, Stefano
, p. 1188 - 1194 (2013/01/03)
GW5975991 is a novel NK-1 antagonist currently under investigation for the treatment of CNS disorders and emesis. The initial synthetic route devised from the medicinal chemistry one, used several hazardous reagents, gave low yields, and produced high lev
METHOD FOR PRODUCING N,N -DIALKOXY-N,N -DIALKYL OXAMIDE
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Page/Page column 5, (2008/06/13)
The present invention provides a process for preparing an N,N'-dialkoxy-N,N'-dialkyl oxamide represented by the formula (3) : wherein R2 and R3 may be the same or different from each other, and each represent an alkyl group having 1 to 4 carbon atoms, which comprises reacting an oxalic acid diester represented by the formula (1): wherein R1 and R1' may be the same or different from each other, and each represent a hydrocarbon group, and an N-alkyl-O-alkylhydroxylamine represented by the formula (2): ????????R2O-NHR3?????(2) wherein R2 and R3 have the same meanings as defined above, or an acid salt thereof in the presence of a base.
Synthesis of leprapinic acid, calycine and analogues by sequential "[3+2] cyclization/suzuki/lactonization" reactions
Ahmed, Zafar,Albrecht, Uwe,Langer, Peter
, p. 3469 - 3474 (2007/10/03)
Calycine and analogues were prepared on the basis of Suzuki cross-coupling reactions of γ-alkylidene-α-hydroxybutenolides - readily available by cyclization of 1,3-dicarbonyl dianions or 1,3-bis(silyl enol ether)s with oxalyl derivatives - and subsequent boron tribromide-mediated lactonization. Leprapinic acid was prepared by chemoselective boron tribromide-mediated deprotection of permethylated leprapinic acid. Wiley-VCH Verlag GmbH & Co. KGaA, 2005.
Pyrrolidine modulators of chemokine receptor activity
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, (2008/06/13)
The present invention is directed to pyrrolidine compounds of the formula 1: (wherein R1, R2, R3, R4, R5, R6and n are defined herein) which are useful as modulators of chemokine receptor activity. In particular, these compounds are useful as modulators of the chemokine receptors CCR-5 and/or CCR-3.
α-Keto Amides and 1,2-Diketones from N,N'-Dimethoxy-N,N'-dimethylethanediamide. A Synthetic and Mechanistic Investigation
Sibi, Mukund P.,Marvin, Mali,Sharma, Rajiv
, p. 5016 - 5023 (2007/10/03)
N,N'-Dimethoxy-N,N'-dimethylethanediamide (1), a 1,2-dicarbonyl synthon prepared from oxalyl chloride, undergoes nucleophilic displacements with Grignard reagents to provide α-keto amides 2-12 in 28-90percent yields.The synthon also undergoes double nucleophilic displacements with organolithium reagents to furnish symmetrical 1,2-diketones 15-23 in 15-84percent yields.A mechanism accounting for all the products from the reaction of 1 with nucleophiles has been proposed.Several control experiments were carried out to support the proposed mechanism.