A New Strategy for the Synthesisof γ-Nitro Alcohols from Aliphatic Nitro Compounds
作者:Sema L. Ioffe、Roman A. Kunetsky、Alexander D. Dilman、Konstantin P. Tsvaygboym、Yury A. Strelenko、Vladimir A. Tartakovsky
DOI:10.1055/s-2003-40203
日期:——
A general method for the synthesis of γ-nitro alcohols 1 via C-C-cross-coupling of nitro compounds 3 with silyl derivatives of nitro compounds 4, deoximination of resulting substrates and selective reduction of carbonyl group of ketones 2 is elaborated.
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
Sequential Acylation/Silylation/Hetero‐Claisen Rearrangement of Nitroalkanes for the Synthesis of Protected Hydroxyoxime Derivatives
作者:Yulia A. Antonova、Sema L. Ioffe、Alexey Yu. Sukhorukov、Andrey A. Tabolin
DOI:10.1002/ejoc.202100469
日期:2021.6.14
One-pot acylation-silylation sequence was developed for the synthesis of protected hydroxyoximes from aliphatic nitro compounds. Procedure is characterized by wide substrate scope for nitro compounds, acylating and silylating agents.
(S)-(+)-4-Nitro-2-butanol (1) obtained by the stereoselective reduction of 4-nitro-2-butanone by bakers’ yeast was employed for the syntheses of natural products. A precursor of (+)-brefeldin A is synthesized starting from this chiral building block by 10 steps short-cut procedure compared with the shortest method so far reported. (S)-(+)-Sulcatol is obtained in much better enantiomeric purity than those reported. The reactivity of 1 in base-catalyzed condensations with Michael acceptors or aldehydes is largely affected by a base employed as the catalyst.
[EN] SYNTHESIS OF DESOSAMINES<br/>[FR] SYNTHÈSE DE DÉSOSAMINES
申请人:HARVARD COLLEGE
公开号:WO2016154533A1
公开(公告)日:2016-09-29
The present invention provides desosamine and mycaminose analogs and nitro sugars and methods for their preparation. The invention also provides methods of cyclizing a compound of Formula (Α') with glyoxal to give a nitro sugar of Formula (B). Methods for the preparation of compound of Formula (D') are provided comprising cyclization of a nitro alcohol to give a nitro sugar and reduction and alkylation of the nitro sugar to give a desosamine, mycaminose, or an analog thereof.