Organic Letters p. 3230 - 3233 (2016)
Update date:2022-08-10
Topics:
Brzezinska, Jolanta
Witkowska, Agnieszka
Balbańska, Sandra
Chmielewski, Marcin K.
A thermolabile protecting group strategy for carboxylic acids is expanded. Thermosensitive esters are readily prepared using a known procedure, and their stability under neutral condition is investigated. Effective thermolytic deprotection initiated only by temperature for different carboxylic acids is demonstrated, and the compatibility of a thermolytic protecting group with acidic and basic protecting groups in an orthogonal protection strategy is also presented. This study showed interesting correlations between the pKa of acids and the deprotection rate of their well-protected moieties.
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