作者:Reza-Ali Fallahpour、Hans-J�rgen Hansen
DOI:10.1002/hlca.19940770817
日期:1994.12.14
methylenation reaction of methyl azulene-2-carboxylates (cf. Schemes 1 and 2) with Tebbe's or Takai's reagent is described. When the prescribed amount of Takai's reagent is applied in a four-fold excess, the corresponding cyclopropyl methyl ethers are formed instead of the enol ethers (cf. Schemes 2 and 3). Similarly, methyl benzoate and methyl 2-naphthoate yield, after treatment with Takai's reagent and hydrolysis
描述了氮z-2-羧酸甲酯(参见方案1和2)与Tebbe氏试剂或Takai氏试剂的亚甲基化反应。当以四倍过量使用规定量的Takai试剂时,会形成相应的环丙基甲基醚,而不是烯醇醚(参见方案2和3)。类似地,在用Takai试剂处理和水解后,分别得到苯甲酸甲酯和2-萘甲酸甲酯相应的环丙醇18和19(方案3)。环丙基甲基醚4或在酸催化下将环丙醇5重排成1-(azulen-2-基)丙-1-酮20(方案4)。其在CF 3 COOH中用Et 3 SiH还原得到2-丙基氮杂21。