Pd(0)-mediated [11C]carbonylation of aryl and heteroaryl boronic acid pinacol esters with [11C]carbon monoxide under ambient conditions and a facile process for the conversion of [carbonyl-11C]esters to [carbonyl-11C]amides
作者:Hideki Ishii、Katsuyuki Minegishi、Koutaro Nagatsu、Ming-Rong Zhang
DOI:10.1016/j.tet.2015.01.008
日期:2015.3
radiochemical yields in the range of 6–80%. Furthermore, some of these [carbonyl-11C]esters were treated with sodium hydroxide or aqueous ammonium to give the corresponding [carbonyl-11C]carboxylic acids and amides, respectively. This new method was also used to achieve the direct syntheses of [11C]aspirin using water or tetramethylammonium hydroxide as the nucleophile instead of MeOH in DMF.
已开发出一种新方法,用于在对苯醌和三苯膦在N,N的混合物中,用[ 11 C]一氧化碳进行Pd(0)介导的芳基/杂芳基硼酸频哪醇酯的[ 11 C]羰基化-二甲基甲酰胺(DMF)和甲醇(MeOH)或仅在环境温度和65°C下的MeOH。使用该方法,以各种不同的芳基/杂芳基硼酸酯的转化为相应的[羰基- 11 C]酯具有在6-80%的范围内衰变校正的放射化学产率。此外,一些[中羰基- 11C]酯用氢氧化钠或铵水溶液处理,得到对应的[羰基- 11 C]羧酸和酰胺,分别。该新方法还用于在水或DMF中使用甲醇或氢氧化四甲铵代替MeOH来直接合成[ 11 C]阿司匹林。