868054-61-9Relevant academic research and scientific papers
Chemoenzymatic synthesis of stannylated metomidate as a precursor for electrophilic radiohalogenations - Regioselective alkylation of methyl 1H-imidazole-5-carboxylate [1]
Hammerschmidt, Friedrich,Simov, Biljana Peric,Schmidt, Susanne,Schneider, Sabine,Zolle, Ilse
, p. 229 - 239 (2007/10/03)
Metomidate (ee 99%) substituted with iodine in the phenyl ring was prepared from (S)-1-(4-iodophenyl)ethanol (ee >98%) obtained by lipase-catalysed resolution and methyl 1H-imidazole-5-carboxylate. The two fragments were joined highly regioselectively (al
ASYMMETRIC ACYLATION OF ALCOHOLS IN THE PRESENCE OF CHIRAL TERTIARY AMINES
Potapov, V. M.,Dem'yanovich, V. M.,Khlebnikov, V. A.,Koval'skaya, S. S.
, p. 1602 - 1606 (2007/10/02)
The asymmetric acylation of secondary alcohols with acetic anhydride in the presence of chiral tertiary amines, synthesized from S-(-)-α-phenylethylamine, was investigated.The optical yield of the obtained alcohols was not greater than 2.4percent.It was established that in the presence of S-(-)-N,N-dimethyl-α-phenylethylamine the unreacted alcohol is rich in the S isomer.On the basis of this relationship the S configuration was proposed for (-)-4-iodo-, (-)-4-chloro-, and (-)-3-nitrophenylehanols.
