[双(三氟乙酰氧基)碘]全氟烷烃C n F 2 n +1 I(OCOCF 3)2(n = 4、6、8、10、12 )可以方便地通过在三氟乙酸中用过氧化物氧化相应的全氟烷基碘化物来制备。然后在室温下用对甲苯磺酸处理,将其转化为稳定的[羟基(甲苯磺酰氧基)碘]全氟烷烃C n F 2 n +1 I(OH)OTs 。该通用且方便的方法已进一步扩展到各种[双(三氟乙酰氧基)碘]芳烃ArI(OCOCF 3)2的合成。
Surgical Cleavage of Unstrained C(
<i>sp</i>
<sup>3</sup>
)−C(
<i>sp</i>
<sup>3</sup>
) Bonds in General Alcohols for Heteroaryl C−H Alkylation and Acylation
作者:Yaxin Wang、Le Yang、Shuai Liu、Lixia Huang、Zhong‐Quan Liu
DOI:10.1002/adsc.201900975
日期:2019.10.8
We reported herein a predictable and surgicalcleavage of carbon‐carbon bond in alcohols. A wide range of 1°, 2° and 3° alcohols including sugars and steroids without ring strain or steric hindrance were all compatible with this system. Also it offered a green and practical strategy for generation of alkyl/acyl radicals using alcohols as the sources. Besides, the features of visible‐light‐initiation