A simple two-step synthesis of 2-(alkylamino)-1-arylethanols, including racemic adrenaline, from aromatic aldehydes via 5-aryloxazolidines
作者:Vladimir S. Moshkin、Vyacheslav Ya. Sosnovskikh
DOI:10.1016/j.tetlet.2013.08.083
日期:2013.10
Benzaldehydes react smoothly with nonstabilized azomethine ylides, generated in situ from sarcosine/formaldehyde or N-(methoxymethyl)-N-(trimethylsilylmethyl)benzylamine, to give 5-aryloxazolidines as intermediates. These were converted into 2-(alkylamino)-1-arylethanols in good yields by simple heating in methanol with hydrochloric acid, or by treatment with hydrazine hydrate in ethanol.
Novel saccharide derivatives of protocatechualdehyde represented by the general formula (I): ##STR1## wherein R.sup.1 represents a hydrogen atom or a benzoyl group, and R.sup.2 represents an alkyl group. The method for preparing thereof and the use of the compound as antiinflammatory agents.
Porphyrin self-assembly using a boronic acid template
作者:Luke D. Sarson、Keiko Ueda、Masayuki Takeuchi、Seiji Shinkai
DOI:10.1039/cc9960000619
日期:——
A 1:1 mixture of zinc dicatechol porphyrin ZnL and pyridine-3-boronic acid 3 self-assembles into dimers; the corresponding magnesium dicatechol porphyrin MgL assembles into a polymer.