93183-15-4Relevant academic research and scientific papers
ON-DEMAND PHOSPHORAMIDITE SYNTHESIS
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Page/Page column 36-38; 48, (2022/01/24)
The invention relates to a method of synthesis of phosphoramidites by immobilization of a phosphitylation agent on a resin activated to create a charged resin, then putting in contact with the charged resin with a suitable substrate. Phosphoramidites are synthesized in a few minutes from the application of the starting materials. Thus, the process makes it possible to create specific phosphoramidites on demand when they are needed in other applications. The substrates to be applied are mainly nucleosides, thus making it possible to create nucleoside phosphoramidites for the subsequent synthesis of oligonucleotides.
Microwave-assisted preparation of nucleoside-phosphoramidites
Meher,Efthymiou,Stoop,Krishnamurthy
supporting information, p. 7463 - 7465 (2014/07/07)
Microwave-assisted phosphitylation of sterically hindered nucleosides is demonstrated to be an efficient method for the preparation of corresponding phosphoramidites (otherwise onerous under standard conditions) and is shown to be general in its applicability. the Partner Organisations 2014.
A new and convenient approach for the preparation of β-cyanoethyl protected trinucleotide phosphoramidites
Janczyk, Matthaeus,Appel, Bettina,Springstubbe, Danilo,Fritz, Hans-Joachim,Mueller, Sabine
supporting information; experimental part, p. 1510 - 1513 (2012/03/22)
Herein we report a convenient approach for the preparation of fully protected trinucleotide synthons to be used for the synthesis of gene libraries. The trinucleotide synthons bear β-cyanoethyl groups at the phosphate residues, and thus can be used in standard oligonucleotide synthesis without additional steps for deprotection and work-up.
Methods of producing phosphitylated compounds
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Page 6, (2008/06/13)
Provided are methods of producing phosphitylated compounds, including 3′-O-phosphoramidites, comprising the step of reacting a hydroxyl-containing compound with a phosphitylating agent in the presence of a phosphitylation activator selected from the group consisting of: (1) acid-base complexes derived from an amine base of Formula I 1wherein R, R1, and R2 are independently C1-C10 alkyl, C1-C10 cycloalkyl, C1-C10 aryl, C1-C10 aralkyl, C1-C10 heteroalkyl, or C1-C10 heteroaryl; (2) acid-base complexes derived from an amine base of Formula II 2wherein R3, R4, R5, R6, and R7 are independently hydrogen, C1-C10 alkyl, C1-C10 cycloalkyl, C1-C10 aryl, C1-C10 aralkyl, C1-C10 heteroalkyl, or C1-C10 heteroaryl, and at least one of R3, R4, R5 R6, and R7 is not hydrogen.; (3) acid-base complexes derived from a diazabicyclo amine base; (4) zwitterionic amine complexes; and (5) combinations of two or more thereof, to produce a phosphitylated compound.
Method of preparing phosphoramidites
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Example 6, (2008/06/13)
Improved methods for preparation of phosphoramidite compounds are disclosed. The phosphoramidites are useful, for example, for the preparation of oligonucleotides by solid state oligonucleotide synthetic regimes.
β-CYANOETHYL N,N-DIALKYLAMINO/N-MORPHOLINOMONOCHLORO PHOSPHOAMIDITES, NEW PHOSPHITYLATING AGENTS FACILITATING EASE OF DEPROTECTION AND WORK-UP OF SYNTHESIZED OLIGONUCLEOTIDES
Sinha, N. D.,Biernat, J.,Koester, H.
, p. 5843 - 5846 (2007/10/02)
β-Cyanoethyl monochlorophosphoamidites of the secondary amines N,N-dimethylamine, N,N-diisopropylamine and morpholine have been prepared which showed quantitative phosphitylation of the protected deoxynucleosides.The phosphitylated deoxynucleosides have successfully been used in the formation of internucleotidic bonds. β-Cyanoethyl nucleoside-3'-N,N-diisopropylphosphoamidites have saticfactorily been used for the synthesis of the oligodeoxynucleotide d(CGGTACCG).
