Catalytic processes for the functionalisation and desymmetrisation of malononitrile derivatives
摘要:
Palladium catalysed 3-component cascades are described involving aryl/heteroaryl iodides, allene and benzyl malononitrile. Catalytic monohydration and monoamination of malononitriles to the corresponding monoamides and monoamidines are also described together with several examples of mono-oxazoline formation. (c) 2005 Elsevier Ltd. All rights reserved.
Palladium catalysed 3-component cascades are described involving aryl/heteroaryl iodides, allene and benzyl malononitrile. Catalytic monohydration and monoamination of malononitriles to the corresponding monoamides and monoamidines are also described together with several examples of mono-oxazoline formation. (c) 2005 Elsevier Ltd. All rights reserved.
Access to Cyclopentenone via Pd(0)-Catalyzed Reductive Cyclization of (Z)-5-Iodo-4-pentenenitrile
作者:Ming Dong、Xiaofeng Tong
DOI:10.1021/acs.orglett.3c03999
日期:2024.1.12
A ligand-free Pd(0)-catalyzed cyclization of (Z)-5-iodo-4-pentenenitrile has been realized with the help of HCO2H reductant, which is followed by imine hydrolysis to afford cyclopentenone derivatives in moderate to good yields. Control experiments clearly points out that the proton originally came from HCO2H plays a crucial role on protonation of the resultant imido-Pd2+ intermediate. This protocol