A contribution to the chemistry of pyrazole-type dianhydrophenylosazones
作者:László Somogyi
DOI:10.1016/0008-6215(85)85007-2
日期:1985.11
zole acetylphenylhydrazone ( d -4, n = 3) in boiling acetic anhydride containing anhydrous sodium acetate. Racemic 3,4,6-tri-O-acetyl-5-deoxyhex-4-enos-2-ulose 1-acetylphenylhydrazone 2-phenylhydrazone (11) was isolated as an intermediate in the reaction performed in the absence of sodium acetate. The cyclisation of 11, via allylicrearrangement, into dl -4 (n = 3) and 5-( dl -glycero-1,2-dihydrox