Iridium-Catalyzed Cage B(4)-Amidation Reaction of <i>o</i>-Carboranes with Dioxazolones: Selective Synthesis of Amidated <i>o</i>-Carboranes and Amidated and Methoxycarbonylated <i>nido</i>-Carboranes
作者:Gi Uk Han、Yonghyeon Baek、Kyungsup Lee、Seohyun Shin、Hee Chan Noh、Phil Ho Lee
DOI:10.1021/acs.orglett.0c03927
日期:2021.1.15
Described is the Ir-catalyzed cage B(4)-amidation of o-carboranes with dioxazolones by carboxylic acid-assisted B(4)–H bond activation under extremely mild conditions, affording amidated o-carboranes and amidated and methoxycarbonylated nido-carboranes through sequential B(4)-amidation, O-methylation, and B(3)-deboronation in one pot. Carboxylic acid used as a directing group after the cage B(4)-amidation
Rhodium-Catalyzed Amidation of the Cage B(4)–H Bond in <i>o</i>-Carboranes with Dioxazolones by Carboxylic Acid-Assisted B(4)–H Bond Activation
作者:Yonghyeon Baek、Suhui Kim、Jeong-Yu Son、Kooyeon Lee、Dongwook Kim、Phil Ho Lee
DOI:10.1021/acscatal.9b03380
日期:2019.11.1
amidation of the cage B(4)–H bond in a wide range of o-carboranes with alkyl-, aryl-, and heteroaryl-substituted dioxazolones is demonstrated by carboxylic acid-assisted B(4)–H bond activation in carborane clusters, providing a number of amidated o-carboranes in high yields with the release of carbon dioxide. Moreover, the selective 2-fold decarboxylative amidation reaction of the cage B(4)–H bond in o-carborane
Direct and Regioselective Palladium(II)-Catalyzed B(4)–H Monoacyloxylation and B(4,5)–H Diacetoxylation of <i>o</i>-Carborane Acids with Phenyliodonium Dicarboxylates
作者:Hyeongcheol Ham、Seohyun Shin、Gi Hoon Ko、Sang Hoon Han、Gi Uk Han、Chanyoung Maeng、Tae Hyeon Kim、Hee Chan Noh、Kyungsup Lee、Hanjoong Kim、Heejin Yang、Phil Ho Lee