Features of the reactions of β-aryl(heteryl)-α-nitroacrylates with N,N-, N,O-, and N,S-binucleophiles
作者:L. V. Baichurina、R. I. Baichurin、M. V. Filippenko、N. I. Aboskalova、V. M. Berestovitskaya
DOI:10.1134/s1070363212080117
日期:2012.8
regiospecifically through the initial formation of the AdN products, among which only the product from o-aminothiophenol was isolated. The conditions of converting the S-adducts into 2-aryl(heteryl)benzothiazole were found. The N-adducts formed in the reaction with hydrazine, o-phenylenediamine, and o-aminophenol undergo immediately the spontaneous transformation into the linear (azine, azomethine) or heterocyclic
Knoevenagel-kondensationen mit titantetrachlorid/base—II
作者:W. Lehnert
DOI:10.1016/0040-4020(72)84029-8
日期:1972.1
the presence of titaniumtetrachloride in tetrahydrofurane and a tert. organic base. ethyl acetoacetate and ethyl nitroacetate undergo condensation with aliphatic, aromatic, and heterocyclic aldehydes to give the corresponding α,β-unsaturated α-acetyl and α-nitro carboxylic acidesters in good yields. The latter compounds are of interest in the preparation of various α-amino acids.
Geminally activated β-nitrostyrenes in reactions with cyclic β-diketones
作者:V. M. Berestovitskaya、R. I. Baichurin、L. V. Baichurina、A. V. Fel’gendler、N. I. Aboskalova
DOI:10.1134/s1070363213090211
日期:2013.9
gem-alkoxycarbonylnitroethenes with cyclic β-diketones (dihydroresorcinol and dimedone) occurs as a one-pot process via sequential AdN and SN steps followed by denitration to give functionally substituted hexahydrobenzofurans. The intermediate products of the nucleophilic addition have been isolated in the reactions of gem-acetylnitroethenes with dihydroresorcinol. The structures of the synthesized compounds
宝石-苯甲酰基硝基乙烯和宝石-烷氧基羰基硝基乙烯与环状β-二酮(二氢间苯二酚和二甲酮)的相互作用是通过顺序的Ad N和S N步骤进行一锅法过程,然后进行反硝化生成功能取代的六氢苯并呋喃。亲核加成的中间产物已经在宝石-乙酰基硝基乙烯与二氢间苯二酚的反应中分离出。合成化合物的结构已通过IR,1 H和13 C- 1 H}光谱学证实,其中包括异核相关实验(1 H- 13 C HMQC和1 H- 13 C HMBC)。
Efficient synthesis of β-nitro amides by aminocarbonylation of ethoxycarbonyl-containing nitroalkenes with carbamoylsilane
作者:Yanhong Liu、Yuling Han、Jianxin Chen
DOI:10.1016/j.mencom.2021.01.041
日期:2021.1
Synthesis of benzoyl- and ethoxycarbonyl-containing dihydrofurocoumarins
作者:R. I. Baichurin、L. V. Baichurina、N. I. Aboskalova、V. M. Berestovitskaya