6304-98-9Relevant articles and documents
A study of the strength of a template molecule - A functional monomer interaction that affects the performance of molecularly imprinted polymers and its application to chiral amplification
Yasuyama, Takuro,Matsunaga, Hirofumi,Ando, Shin,Ishizuka, Tadao
, p. 396 - 402 (2017/04/14)
A novel type of molecularly imprinted polymer (MIP), N-benzoyl-(S)-valine anilide-imprinted polymer (IP-2), was prepared using hydrogen-bonding interactions as a main force in the pre-polymerization step. The performance of the IP-2 was evaluated via batch procedure and compared with a (S)-valine anilideimprinted polymer (IP-1) that was prepared using an ionic interaction that is stronger than hydrogen bonding. Although both polymers showed a preferential adsorbability for (S)-amino acid derivatives, different performances were observed in terms of adsorbability and enantioselectivity. In addition, the IP-2 was able to recognize the enantiomer of a valine-derived chiral catalyst. This phenomenon was applied to a chiral amplification reaction, and a highly selective asymmetric Mannich-type amination was achieved using the combination of a racemic catalyst and a MIP.
Br?nsted acid catalyzed azlactone ring opening by nucleophiles
Pereira, Adriane A.,De Castro, Pedro P.,De Mello, Amanda C.,Ferreira, Bruno R.V.,Eberlin, Marcos N.,Amarante, Giovanni W.
, p. 3271 - 3275 (2014/05/06)
Br?nsted acid catalyzed azlactone ring opening in the presence of different nucleophiles leading to the efficient synthesis of protected amides and amino esters is presented. Sixteen compounds were synthesized in good to excellent isolated yields. Mechani
Aminothiazole derivative. I. A convenient synthesis of monocyclic and condensed 5-aminothiazole derivatives
Uchikawa,Fukatsu,Aono
, p. 877 - 887 (2007/10/02)
Treatment of diamides derived from α-amino acids with phosphorus pentasulfide or Lawesson's reagent was shown to provide a convenient method to prepare 5-aminothiazoles. By this method, in addition to monocyclic 5-aminothiazoles 19, novel bicyclic 5-aminothiazole derivatives such as 4,5,6,7-tetrahydrothiazolo[5,4-b]pyridines II, 5,6,7,8-tetrahydro-4H-thiazolo[5,4-b]azepines 7, 4,5,6,7,8,9-hexahydrothiazolo[5,4-b]azocine 16 and related compounds were prepared in moderate to good yields from simple diamides, suggesting the wide versatility of the method.