Ir. Trehan et al., SYNTHESIS OF 1,4-DIKETONES VIA ALPHA-METALLOHYDRAZONES, Indian journal of chemistry. Sect. B: organic chemistry, including medical chemistry, 35(7), 1996, pp. 708-710
Undecan-2,5-dione (IV) and 8-Nonen-2,5-dione (V), key intermediates in
the synthesis of dihydrojasmone and allethrone respectively have been
prepared via regio selective alkylation of alpha-metallohydrazones in
good yields.