Efficient One Step Procedure for the Synthesis of α-Trifluoromethylated Arylacetates
摘要:
The reaction of beta,beta-difluoro-alpha-trifluoromethylstyrene derivatives 1 with 3 equiv. of sodium methoxide in acetonitrile at 25 degrees C afforded alpha-trifluoromethylated arylacetates 3 in good yields.
An efficient preparation of novel 5-fluoropyrazolin-3-one derivatives from α-trifluoromethylated α-arylacetates
作者:No Kyun Park、Bum Tae Kim、Surk Sik Moon、Sung Lan Jeon、In Howa Jeong
DOI:10.1016/j.tet.2004.05.112
日期:2004.8
reactions of α-trifluoromethylated α-arylacetates 1 with 3 equiv of hydrazine, methylhydrazine or benzylhydrazine in 1,4-dioxane at reflux for 24 h afforded the corresponding 5-fluoropyrazolin-3-one derivatives 3a–m in high yields. Similarly, treatment of 1 with 3 equiv of PhNLiNH2 in THF at −78 °C, followed by warming to room temperature, resulted in the formation of 3n–s in high yields.
Efficient One Step Procedure for the Synthesis of α-Trifluoromethylated Arylacetates
作者:In Howa Jeong、Tae Won Park、Bum Tae Kim
DOI:10.1080/00397919808007172
日期:1998.6
The reaction of beta,beta-difluoro-alpha-trifluoromethylstyrene derivatives 1 with 3 equiv. of sodium methoxide in acetonitrile at 25 degrees C afforded alpha-trifluoromethylated arylacetates 3 in good yields.