ORGANIC SPECTROSCOPY INTERNATIONAL: (E)- 4-Oxo-2-hexenal

(E)- 4-Oxo-2-hexenal (2)

As described above for the synthesis of aldehyde 10, diol 12 (0.30 g; 2.60 mmol) was converted into compound2 (77 % yield; 0.22 g) using PCC adsorbed in Al₂O₃(12.7 g, 10.4 mmol) and after purification through column chromatography on silica gel (hexane : ethyl ether / 1:3). IR n_max / cm^-1 2982, 1752, 1699, 1615, 1121, 980;¹H-NMR (200 MHz, CDCl₃) d 1.16 (t, J 7 Hz, 3H); 2.73 (q, J 7 Hz, 2H); 6.71-6.94 (m, 2H); 9.78 (d, J 6 Hz, 1H);¹³C-NMR (50 MHz, CDCl₃) d 7.5; 34.5; 137.2; 144.6; 193.3; 200.3; GC-MS (70 eV) m/z %: 112 (M⁺ , 16%), 97 (6%), 83 (100%), 69 (4%), 55 (77%), 39 (8% ).

Journal of the Brazilian Chemical Society

Print version ISSN 0103-5053

J. Braz. Chem. Soc. vol.11 n.4 São Paulo July/Aug. 2000

http://dx.doi.org/10.1590/S0103-50532000000400017

Article

Alarm Pheromone System of Stink Bug Piezodorus guildinii(Heteroptera: Pentatomidae)

Paulo H. G. Zarbin^a*, Miguel Borges^b, Alcindo A. dos Santos^a, Alfredo R. M. de Oliveira^a, Fábio Simonelli^aand Francisco de A. Marques^a

^aUniversidade Federal do Paraná, Departamento de Química, CP 19081, 81531-990, Curitiba - PR, Brazil^bEmbrapa, Cenargen, Área de Controle Biológico, CP 02372, 70849-970, Brasília - DF, Brazil

http://www.scielo.br/scielo.php?pid=S0103-50532000000400017&script=sci_arttext

see