An easy access to aromatic azo compounds under ultrasound/microwave irradiation

Synlett

Volumn , Issue 16, 2006, Pages 2605-2608

  Cravotto, Giancarlo ^a   Boffa, Luisa ^a   Bia, Marco ^a   Bonrath, Werner ^b   Curini, Massimo ^c   Heropoulos, Georgios A ^d  

^a UNIVERSITY OF TURIN   (Italy)

^b DSM NUTRITIONAL PRODUCTS LTD   (Switzerland)

^c UNIVERSITY OF PERUGIA   (Italy)

^d INSTITUTE OF BIOLOGY   (Greece)

Author keywords

Azo compounds; Microwave; Nitroarenes; Reduction; Ultrasound

Indexed keywords

AMMONIUM CHLORIDE; AROMATIC NITRO COMPOUND; AZO COMPOUND;

ARTICLE; CHEMICAL REACTION; HIGH TEMPERATURE; MICROWAVE RADIATION; REACTOR; REDUCTION; ULTRASOUND;

EID: 33750043497     PISSN: 09365214     EISSN: None     Source Type: Journal    
DOI: 10.1055/s-2006-951481     Document Type: Article

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25. -1 due to N=N stretching was diagnostic. All the azo and azoxy compounds were fully characterised by IR, mass and NMR spectroscopy and when available compared with published data.
26. 4, concentrated under vacuum and purified either by preparative TLC or by flash chromatography. (For substrate 1, reaction at 80 °C: the product was precipitated with 2 N HCl and the mixture was stirred until the Zn powder had completely dissolved. The crude product was collected on a Hirsch funnel and dried under vacuum.)
27. R 24.2 min.
28. + + Na].
29. +.