1.
Org Lett
; 2(11): 1557-60, 2000 Jun 01.
Artigo
em Inglês
| MEDLINE
| ID: mdl-10841478
RESUMO
[reaction--see text] A variety of 2-substituted-2,3-dihydro-1,4-dioxino[2,3-b]pyridines B have been synthesized from the readily available 2-nitro-3-oxiranylmethoxypyridine 1 via a Smiles rearrangement. We demonstrate how variations of reaction conditions affect the product distribution of A and B.
Assuntos
Dioxinas/síntese química , Piridinas/síntese química , Dioxinas/química , Desenho de Fármacos , Espectroscopia de Ressonância Magnética , Piridinas/química
2.
Chirality
; 17(1): 30-6, 2005 Jan.
Artigo
em Inglês
| MEDLINE
| ID: mdl-15526340
RESUMO
A rapid and simple procedure for enantioselective preparation of 2- and 3-substituted 2,3-dihydro[1,4]dioxino[2,3-b]pyridine derivatives (A and B, respectively) is described. The enantiomeric purity of each isomer was determined by capillary electrophoresis using a dual-cyclodextrin system (S-beta-CD/beta-CD) dissolved in formic acid-ammonia buffer (pH 4, ionic strength 50 mM).