82551-63-1Relevant articles and documents
Functionalizing the γ-position of α-diazo-β-ketoesters
Nguyen, Thu Q.,Alqurafi, Maha,Edwards, Cash,Nguyen, Pauline,Kim, Jean,Casco, Samuel,Bennet, Maricka,Chiang, Christopher,Lohry, Maureen,Cox, Melina,Meshram, Byron,Le, Duyen,Kim, Eugene,Smriti, Snigdha,Oelschlaeger, Peter,Buynak, John D.
, p. 3330 - 3333 (2016)
Although α-diazo-β-ketoesters are synthetically versatile intermediates, methodology for introducing this functionality into complex molecules is still limited, most frequently involving a carboxylic acid precursor, which is then activated and transformed
Method for preparing 2 - diazo acetoacetic acid P-nitrobenzyl ester through microchannel reactor
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Paragraph 0073-0106, (2021/08/25)
The invention relates to a method for preparing 2 -nitrobenzyl acetate through a microchannel reactor, which comprises the following steps: reacting a haloalkane solution of diketene, 4 - nitrobenzyl alcohol and a catalyst in a microchannel reactor A. The
Atypical Carbapenem Antibiotics with Improved Activity Against Carbapenemase-Producing Acinetobacter baumannii
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Paragraph 0022, (2020/11/30)
The following invention deals with the design, preparation, evaluation, and use of carbapenem antibiotics with improved activity, relative to current commercially available carbapenem antibiotics, against infections involving multidrug resistant, carbapen
Six-Membered Cyclic Nitroso Acetals: Synthesis and Studies of the Nitrogen Inversion Process of N-Silyloxy-3,6-dihydro-2H-1,2-oxazines
Shved, Alexander S.,Tabolin, Andrey A.,Novikov, Roman A.,Nelyubina, Yulia V.,Timofeev, Vladimir P.,Ioffe, Sema L.
supporting information, p. 5569 - 5578 (2016/11/25)
Silyl nitronates undergo rhodium-catalyzed formal [3+3]-cycloaddition with enol diazoacetates to form N-silyloxy-3,6-dihydro-2H-1,2-oxazines. The scope of the reaction and the extent of the major side process were evaluated. A mechanistic scheme was propo
Construction of enantiomerically enriched diazo compounds using diazo esters as nucleophiles: Chiral Lewis base catalysis
Mao, Haibin,Lin, Aijun,Shi, Yan,Mao, Zhijie,Zhu, Xuebin,Li, Weipeng,Hu, Hongwen,Cheng, Yixiang,Zhu, Chengjian
supporting information, p. 6288 - 6292 (2013/07/05)
Amazing diazo: The title reaction leads to highly functionalized diazo compounds in good yields with excellent enantioselectivities (see scheme; Boc=tert-butoxycarbonyl). The utility of the products was demonstrated by the rapid synthesis of a number of o
2-Diazoacetoacetic acid, an efficient and convenient reagent for the synthesis of α-diazo-β-ketoesters
Meyer, Michael E.,Ferreira, Eric M.,Stoltz, Brian M.
, p. 1316 - 1318 (2008/02/03)
The formation of various α-diazo acetoacetic esters can be obtained in a single transformation with good to excellent yields using readily available 2-diazoacetoacetic acid. The Royal Society of Chemistry 2006.
Process for the preparation of 2-diazo-3-trisubstituted silyloxy 3-butenoates
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, (2008/06/13)
A novel process for preparing 2-diazo-3-trisubstituted silyloxy-3-butenoates, synthons useful in the conversion of 3-substituted-4-acetoxy azetidinones and penicillin to thienamycin, imipenem and other carbapenem antibiotic compounds is provided, comprisi
Process for the preparation of carbapenem intermediates
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, (2008/06/13)
A process for the preparation of a 4-[3-carboxy-3-diazo-2-oxopropyl]azetidin-2-one of the formula STR1 comprising reacting a 4-acetoxy-2-azetininone of the formula STR2 with a compound of the formula STR3 in an inert solvent, in the presence of a base and of a silylating agent, in a one-pot process. Many of the products are new. The products are useful in the synthesis of carbapenem antibiotics.
Substituted 6-hydroxymethyl-carbapenem antibiotics
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, (2008/06/13)
Substituted 6-hydroxymethyl-carbapenem antibiotics of the formula STR1 in which R1 is --OR4, STR2 A is a direct bond, or an alkylene and/or cycloalkylene radical, R2 is a group of the formula STR3 an aryl or heterocyclic r