A new simple route to furanic ketones; Preparation of Elsholtzione, naginata ketone and perilla ketone.
作者:Gérard Cahiez、Pierre-Yves Chavant、Eric Metais
DOI:10.1016/s0040-4039(00)79145-3
日期:1992.9
Copper- or iron-catalyzed acylation of organomanganese reagents allows to obtain 3- and 2-acylfurans in high yields. Elsholtzione, naginata ketone and perilla ketone have been prepared according to this procedure.
Wittigrearrangement of 3-furylmethyl ethers la-i was investigated. Deprotonation of 3-furylmethyl ethers la-i with bases, such as BuLi and LDA, occurred preferentially at the allylic, propargylic, benzylic positions and α-position adjacent to carbonyl group giving the corresponding anions, which underwent 2,3- and 1,2-rearrangements to afford 3-methyl-2-furylmethanols 2a-i and 3-furylethanols 3a-f
�tudes sur les mati�res v�g�tales volatiles CLXVII Sur la ?-d�hydro-elsholtzione et sur quelques d�riv�s de l'elsholtzione
作者:Yves-Ren� Naves、Paul Ochsner
DOI:10.1002/hlca.19600430216
日期:——
Pure β-dehydro-elsholtzione is obtained by means of the sodium salt of its bisulfite compound. The syn and anti 2,4-dinitrophenylhydrazones are prepared. The KISHNER-WOLFF reduction of elsholtzione gives the corresponding furan, which by hydrogenation is converted into a mixture of cis and trans 3-methyl-2-isoamyl-furans.