Palladium-Catalyzed Hiyama Cross-Coupling of Aryltrifluorosilanes with Aryl and Heteroaryl Chlorides
摘要:
An efficient, palladium-catalyzed Hiyama cross-coupling reaction of aryltrifluorosilanes with aryl chlorides has been developed. A wide variety of functionalized biaryl derivatives were isolated in good to excellent yields. The scope of this reaction has also been extended to heteroaryl chlorides, affording the corresponding heterobiaryl compounds in high yields.
Utilization of Borane-Catalyzed Hydrosilylation as a Dearomatizing Tool: Six-Membered Cyclic Amidine Synthesis from Isoquinolines and Pyridines
作者:Vinh Do Cao、Dong Geun Jo、Seewon Joung、Huiae Kim、Changeun Kim、Seula Yun
DOI:10.1055/s-0040-1707323
日期:2021.2
N-heteroarenes. The reaction mechanism and reactivity of each class of N-heteroarenes has been discussed. The resulting six-membered (Z)-sulfonyl amidine products are rarely reported and are mostly unprecedented. The scalability of this method and versatility of the cyclic amidine products are also presented. Publication History Received: 18 August 2020 Accepted after revision: 09 September 2020 Publication Date:
NaIO4-mediated sequential iodination/amidation reaction of N-alkyl quinolinium iodide salts has been first developed. This cascade process provides an efficient way to rapidly synthesize 3-iodo-N-alkyl quinolinones with high regioselectivity and good functional group tolerance. This protocol was also amenable to the isoquinolinium salts, thus providing a complementary method for preparing the 4-iodo-N-alkyl
Direct Cα-heteroarylation of structurally diverse ethers via a mild N-hydroxysuccinimide mediated cross-dehydrogenative coupling reaction
作者:Shihui Liu、Aoxia Liu、Yongqiang Zhang、Wei Wang
DOI:10.1039/c6sc05697k
日期:——
An important challenge in the Cα-heteroarylation of ethers is the requirement of a large excess amount of ethers (that are used as solvents in many cases) to achieve effective transformations. This drawback has significantly restricted the Cα-heteroarylation of ethers to the use of simple and easily accessible ether substrates. To overcome this limitation, a new, efficient, N-hydroxysuccinimide (NHS)
Practical and Asymmetric Reductive Coupling of Isoquinolines Templated by Chiral Diborons
作者:Dongping Chen、Guangqing Xu、Qinghai Zhou、Lung Wa Chung、Wenjun Tang
DOI:10.1021/jacs.7b04256
日期:2017.7.26
We herein describe a chiral diboron-templated highly diastereoselective and enantioselective reductive coupling of isoquinolines that provided expedited access to a series of chiral substituted bisisoquinolines in good yields and excellent ee’s under mild conditions. The method enjoys a broad substrate scope and good functional group compatibility. Mechanistic investigation suggests the reaction proceeds
Synthesis of 4-Iodoisoquinolin-1(2<i>H</i>)-ones by a Dirhodium(II)-Catalyzed 1,4-Bisfunctionalization of Isoquinolinium Iodide Salts
作者:Zaixiang Fang、Yi Wang、Yuanhua Wang
DOI:10.1021/acs.orglett.8b03614
日期:2019.1.18
An efficient Rh2(II,II)-catalyzed reaction has been developed under mild conditions. This synthetic method proceeds through iodination/oxidation of readily available isoquinolinium iodide salts under aerobic conditions with good to excellent yields. 4-Iodoisoquinolin-1(2H)-ones are important building blocks for biologically and medicinally important compounds. The developed methodology was applied