Tris(pentafluorophenyl)borane-Catalyzed Alkylation of 1,3-Dicarbonyl Compounds with Benzylic Alcohols: Access to Oxygenated Heterocycles
作者:Chada Reddy、Jonnalagadda Vijaykumar、René Grée
DOI:10.1055/s-0030-1258214
日期:2010.11
rane has found to be an effective catalyst for the alkylation of 1,3-dicarbonyl compounds using benzylic alcohols as alkylating agents. Various 1,3-dicarbonyl compounds reacted cleanly with different benzylic alcohols to provide the corresponding monoalkylated products in good yield. In addition tris(pentafluorophenyl)borane efficiently promoted the C3 alkylation of 4-hydroxycoumarins. Further, several
已经发现三(五氟苯基)硼烷是使用苄醇作为烷基化剂将1,3-二羰基化合物烷基化的有效催化剂。各种1,3-二羰基化合物可与不同的苄醇干净地反应,以高收率提供相应的单烷基化产物。另外,三(五氟苯基)硼烷有效地促进了4-羟基香豆素的C3烷基化。此外,已经使用所述方法学作为关键步骤制备了几种氧化的杂环,例如呋喃,4 H-色烯和呋喃香豆素。 三(五氟苯基)硼烷-1,3-二羰基化合物-苄醇-烷基化-杂环