1979
DOI: 10.1002/ange.19790910208
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Selektive elektrochemische Schutzgruppenabspaltung in der Nucleotidsynthese

Abstract: Die selektive Entfernung einer Estergruppe aus dem vollständig geschützten Nucleosid‐3′‐phosphat (2) durch elektrochemische Reduktion löst ein wesentliches Problem der Nucleotidsynthese. Die Reaktion (2) → (3) erfordert − 0.5 V; (2) → (1) gelingt durch saure Hydrolyse. Bei − 1.2 V werden die restlichen Estergruppen aus (1) abgespalten.

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Cited by 13 publications
(2 citation statements)
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“…In spite of these extensive investigations, neither zinc bromide nor other Lewis acidssuch as TiCl 4 , AlCl 3 (Matteucci and Caruthers, 1981), diethyl and diisopropyl aluminum chloride (Köster and Sinha, 1982), or boron trifluoride, applied as etherate (Engels, 1979) or methanol complex (Mitchell et al, 1990)-are of importance in current automated solid-phase deoxyribooligonucleotide synthesis. One of the reasons may be the deposition or adsorption of reagents and by-products (e.g., zinc salts) within the oligonucleotide/solid support system, resulting in the necessity for extensive and time-consuming washes.…”
Section: Lewis Acid Deprotection Of Trityl and Substituted Trityl Gro...mentioning
confidence: 99%
“…In spite of these extensive investigations, neither zinc bromide nor other Lewis acidssuch as TiCl 4 , AlCl 3 (Matteucci and Caruthers, 1981), diethyl and diisopropyl aluminum chloride (Köster and Sinha, 1982), or boron trifluoride, applied as etherate (Engels, 1979) or methanol complex (Mitchell et al, 1990)-are of importance in current automated solid-phase deoxyribooligonucleotide synthesis. One of the reasons may be the deposition or adsorption of reagents and by-products (e.g., zinc salts) within the oligonucleotide/solid support system, resulting in the necessity for extensive and time-consuming washes.…”
Section: Lewis Acid Deprotection Of Trityl and Substituted Trityl Gro...mentioning
confidence: 99%
“…The current work focuses on the direct photochemical decomposition of the 2,2,2-tribromoethoxy group. This functional group has been used as an electrolytically removable protecting group for carboxylic acids, alcohols, amines, and thiols. We have had a longstanding interest in identifying protecting groups that can be removed via photoinduced electron transfer. However, the current study focuses on the direct photochemistry of the 2,2,2-tribromoethoxy group.…”
Section: Introductionmentioning
confidence: 99%