Zinc(II) promoted conversion of aryltriazenes to aryl iodides and aryl nitriles
摘要:
Aryltriazenes react with zinc perchlorate/zinc cyanide to produces arylnitriles and react with zinc iodide to produce aryliodides. The reaction mechanism involves aryl radicals that have been trapped by addition to propenenitriles in a good preparative Meerwein arylation process. (C) 2001 Elsevier Science Ltd. All rights reserved.
1-Aryltriazenes in the Suzuki, Heck, and Sonogashira Reactions in Imidazolium-ILs, with [BMIM(SO<sub>3</sub>H)][OTf] or Sc(OTf)<sub>3</sub>as Promoter, and Pd(OAc)<sub>2</sub>or NiCl<sub>2</sub>·glyme as Catalyst
作者:Suraj M. Sutar、Hemantkumar M. Savanur、Shruti S. Malunavar、Pavankumar Prabhala、Rajesh G. Kalkhambkar、Kenneth K. Laali
DOI:10.1002/ejoc.201901070
日期:2019.9.22
surrogates for aryldiazonium, 1‐aryltriazenes are readily unmasked with [BMIM(SO3H)][OTf] or Sc(OTf)3 and enter into cross‐coupling in widely available imidazolium‐ILs as solvent. The scope of this chemistry in the Suzuki, Heck, and Sonogashirareactions is explored. The reactions give good isolated yields, employing either Pd or Ni as catalyst and thus widening the scope of the protocol.
3-Fluorobutenone (7) reacts with aryl triazenes in the presence of zinc iodide to give 4-aryl-3-fluoro-3-iodo-2-butanones (9a–9f) in moderate yields. The products arise from a free radical process that terminated by iodination of an alkyl radical. The process yields unusual geminal iodo-fluoro compounds.
作者:Timothy B. Patrick、Richard P. Willaredt、David J. DeGonia
DOI:10.1021/jo00213a007
日期:1985.6
Zinc(II) promoted conversion of aryltriazenes to aryl iodides and aryl nitriles
作者:Timothy B Patrick、Thomas Juehne、Elmer Reeb、Daniel Hennessy
DOI:10.1016/s0040-4039(01)00526-3
日期:2001.5
Aryltriazenes react with zinc perchlorate/zinc cyanide to produces arylnitriles and react with zinc iodide to produce aryliodides. The reaction mechanism involves aryl radicals that have been trapped by addition to propenenitriles in a good preparative Meerwein arylation process. (C) 2001 Elsevier Science Ltd. All rights reserved.
Comparison of the Thermal Stabilities of Diazonium Salts and Their Corresponding Triazenes
作者:Christiane Schotten、Samy K. Leprevost、Low Ming Yong、Colan E. Hughes、Kenneth D. M. Harris、Duncan L. Browne
DOI:10.1021/acs.oprd.0c00162
日期:2020.10.16
range of diazonium salts and their corresponding triazenes have been prepared in order to directly compare their relative thermal stabilities (via initial decomposition temperature) from differential scanning calorimetry (DSC) data. A structure–stability relationship has been explored to investigate trends in stability, depending on the aromatic substituent and the structure of the secondary amine component