Unexpected formation of 2′-deoxy-N3-(3,3,3-trifluoro-1-propenyl)uridine via a Michael-type addition to 3,3,3-trifluoropropyne
作者:Panadda Chirakul、Snorri Th. Sigurdsson
DOI:10.1016/s0040-4039(03)01702-7
日期:2003.9
Reaction of 3,3,3-trifluoropropyne with 2′-deoxy-5-iodouridine under conditions that have previously been used to prepare 5-alkynyl-2′-deoxyuridine derivatives gave 2′-deoxy-N3-(3,3,3-trifluoro-1-propenyl)uridine. This unexpected alkylation is a result of a Michael-type addition of N3 on the pyrimidine base to the electron deficient trifluoropropyne.
3,3,3-三氟丙炔与2'-脱氧-5-碘尿苷在先前用于制备5-炔基-2'-脱氧尿苷衍生物的条件下反应,得到2'-脱氧-N 3-(3,3, 3-三氟-1-丙烯基)尿苷。这种出乎意料的烷基化是嘧啶碱基上的N 3向缺乏电子的三氟丙炔的迈克尔型加成的结果。