通过使相应的全氟烷基苯基酮7与0.5当量的三氟甲基磺酸反应,制得带有两个相同的全氟烷基的醇8。t-确定 通过Cannizzaro型歧化。利用新的庞大的双齿配体与由8c产生的两个n -C 3 F 7基团,抗亲脂性磷烷 合成了5a及其稳定的异构体6a。5a和6a的晶体结构受空间位阻的影响很小七氟丙基组。对5a到6a异构化的动力学研究表明,新的配体与其C 2 F 5类似物3a相比可有效降低异构化速率至约一半。
通过使相应的全氟烷基苯基酮7与0.5当量的三氟甲基磺酸反应,制得带有两个相同的全氟烷基的醇8。t-确定 通过Cannizzaro型歧化。利用新的庞大的双齿配体与由8c产生的两个n -C 3 F 7基团,抗亲脂性磷烷 合成了5a及其稳定的异构体6a。5a和6a的晶体结构受空间位阻的影响很小七氟丙基组。对5a到6a异构化的动力学研究表明,新的配体与其C 2 F 5类似物3a相比可有效降低异构化速率至约一半。
Nucleophilic trifluoromethylation of acyl chlorides using the trifluoromethyl iodide/TDAE reagent
作者:Naoto Takechi、Samia Aı̈t-Mohand、Maurice Médebielle、William R. Dolbier
DOI:10.1016/s0040-4039(02)00800-6
日期:2002.6
Chemoselective bis-trifluoromethylation of acyl chloridesusing the CF3I/TDAE-derived nucleophilic trifluoromethyl anion reagent is reported. Very high yields are obtained of an ester product formed by sequential nucleophilic bis-trifluoromethylation, followed by acylation of the resultant alcoholate.
据报道,使用CF 3 I / TDAE衍生的亲核三氟甲基阴离子试剂对酰氯进行化学选择性双三氟甲基化。通过顺序的亲核双-三氟甲基化,然后酰化所得醇化物形成的酯产物获得了非常高的收率。
Efficient synthesis of tetradecafluoro-4-phenylheptan-4-ol by a Cannizzaro-type reaction and application of the alcohol as a bulky Martin ligand variant for a new anti-apicophilic phosphorane
Alcohols 8 bearing two identical perfluoroalkyl groups were prepared by the reaction of the corresponding perfluoroalkyl phenyl ketones 7 with 0.5 equivalents of t-BuOK via Cannizzaro-type disproportionation. Utilizing the new bulky bidentate ligand with two n-C3F7 groups generated from 8c, anti-apicophilic phosphorane 5a and its stable isomer 6a were synthesized. The crystal structures of 5a and 6a
通过使相应的全氟烷基苯基酮7与0.5当量的三氟甲基磺酸反应,制得带有两个相同的全氟烷基的醇8。t-确定 通过Cannizzaro型歧化。利用新的庞大的双齿配体与由8c产生的两个n -C 3 F 7基团,抗亲脂性磷烷 合成了5a及其稳定的异构体6a。5a和6a的晶体结构受空间位阻的影响很小七氟丙基组。对5a到6a异构化的动力学研究表明,新的配体与其C 2 F 5类似物3a相比可有效降低异构化速率至约一半。