The first formal intramolecular 1,3-insertion into OSi bond of rhodium(II) azavinyl carbene have been developed, and valuable phthalan derivatives could be synthesized efficiently. In addition, various functional groups could be introduced to the product conveniently in the assistant of TBAF.
已经开发了第一个正式的分子内 1,3-插入到铑 (II) 氮杂乙烯基卡宾的O Si 键中,并且可以有效地合成有价值的酞烷衍生物。此外,在TBAF的辅助下,可以方便地将各种官能团引入到产品中。
Synthesis of Highly Fused Pyrano[2,3-<i>b</i>]pyridines via Rh(III)-Catalyzed C–H Activation and Intramolecular Cascade Annulation under Room Temperature
作者:Xu Han、Feng Gao、Chunpu Li、Daqing Fang、Xiong Xie、Yu Zhou、Hong Liu
DOI:10.1021/acs.joc.9b03102
日期:2020.5.15
A facile access to the polycyclic-fused pyrano[2,3-b]pyridines has been established under room temperature via Rh(III)-catalyzed C-H bond activation and intramolecular cascade annulation. This strategy features high efficiency, unique versatility, and generality and it can occur under mild conditions in good to excellent yields. More importantly, this strategy can be extended to the late-stage functionalization
Sulfoximines-Assisted Rh(III)-Catalyzed C–H Activation and Intramolecular Annulation for the Synthesis of Fused Isochromeno-1,2-Benzothiazines Scaffolds under Room Temperature
作者:Bao Wang、Xu Han、Jian Li、Chunpu Li、Hong Liu
DOI:10.3390/molecules25112515
日期:——
proposed for the furnishing of highly fused isochromeno-1,2-benzothiazines scaffolds using S-phenylsulfoximides and 4-diazoisochroman-3-imine as substrates under room temperature. This method features diverse substituents and functional groups tolerance and relatively mild reaction conditions with moderate to excellent yields. Additionally, retentive configuration of sulfoximides in the conversion has
Tunable and Chemoselective Syntheses of Dihydroisobenzofurans and Indanones via Rhodium-Catalyzed Tandem Reactions of 2-Triazole-benzaldehydes and 2-Triazole-alkylaryl Ketones
作者:Hongjuan Shen、Junkai Fu、Jianxian Gong、Zhen Yang
DOI:10.1021/ol502617m
日期:2014.11.7
Two novel rhodium(II)-catalyzed tandem reactions were developed for the synthesis of dihydroisobenzofuran and indanone derivatives from 2-triazole-benzaldehydes and 2-triazole-alkylaryl ketones. Dihydroisobenzofuran derivatives were obtained in good yields with high regioselectivities when alcohols were used as nuclophiles in these reactions, whereas the replacement of the alcohol with water resulted