ω-Nitroalcohols as Precursors of Aldehydes ω-Functlonalized: A New Synthesis of 7-Acetoxyheptanal, 7-(2-Tetrahydropyranyloxy)Heptanaland 8-(2-Tetrahydropyranyloxy)Octanal
摘要:
7-Acetoxyheptanal, 7-(2-tetrahydropyranyloxy)heptanal and 8-(2-tetrahydropyranyloxy)octanal were prepared, in good yields, from 7-nitroheptanol and 8-nitrooctanol, via conversion of alcohol to the corresponding acetate or tetrahydropyranyl derivative, then transformation of the nitro group into aldehyde, by the Nef reaction.
Nitroaldol (Henry) reaction catalyzed by amberlyst A-21 as a far superior heterogeneous catalyst.
作者:Roberto Ballini、Giovanna Bosica、Paola Forconi
DOI:10.1016/0040-4020(95)00996-5
日期:1996.1
β-Nitroalcohols can be efficiently obtained with the help of AmberlystA-21, as heterogeneous basic catalyst, with or without solvent. This method is farsuperior to the heterogeneouscatalysts previously reported for the nitroaldol (Henry) reaction, in fact it gives higher yields with primary and secondary nitroalkanes, the formation of by-products such as nitroalkenes is avoited even if aromatic
NOVEL COMPOUNDS AND METHODS FOR SYNTHESIS AND THERAPY
申请人:BISCHOFBERGER NORBERT W.
公开号:US20050176758A1
公开(公告)日:2005-08-11
Novel compounds are described. The compounds generally comprise an acidic group, a basic group, a substituted amino or N-acyl and a group having an optionally hydroxylated alkane moiety. Pharmaceutical compositions comprising the inhibitors of the invention are also described. Methods of inhibiting neuraminidase in samples suspected of containing neuraminidase are also described. Antigenic materials, polymers, antibodies, conjugates of the compounds of the invention with labels, and assay methods for detecting neuraminidase activity are also described.