ω-(4-Oxo-1,4-二氢吡啶-2-基)烷基酰胺是从通过α-碳原子螺接到4-oxo-6-甲基-1,2,3,4-四氢吡啶片段上的环烷酮肟获得的。 C 2分别在多磷酸中加热。将所得酰胺转化为相应的酸和甲酯。5-(6-甲基-4-氧代-1,4-二氢吡啶-2--2-基)戊酰胺与重氮甲烷甲基化,以4-甲氧基吡啶衍生物为主要产物,少量N-甲基衍生物5-(1, 6-二甲基-4-氧代-1,4-二氢吡啶-2-基)戊酰胺。
ω-(4-Oxo-1,4-二氢吡啶-2-基)烷基酰胺是从通过α-碳原子螺接到4-oxo-6-甲基-1,2,3,4-四氢吡啶片段上的环烷酮肟获得的。 C 2分别在多磷酸中加热。将所得酰胺转化为相应的酸和甲酯。5-(6-甲基-4-氧代-1,4-二氢吡啶-2--2-基)戊酰胺与重氮甲烷甲基化,以4-甲氧基吡啶衍生物为主要产物,少量N-甲基衍生物5-(1, 6-二甲基-4-氧代-1,4-二氢吡啶-2-基)戊酰胺。
treated directly with a large excess of the nucleophilic reagents. 2-Chlorocyclooctanone oxime was used in the free state, and 2-chloro-5, 9-cyclododecadienone oxime was first treated with nucleophilic reagents; the resulting α-substituted oximes of the 12-membered ring were hydrogenated to the corresponding saturated oximes with palladium charcoal. These reactions have shown that α-chlorocyclo-alkanone
5-(Hydroxymethyl)furfural in the Synthesis of 4,5-Dialkyl-1H-imidazol-1-ols
作者:I. A. Os’kina、V. I. Krasnov、A. Ya. Tikhonov
DOI:10.1134/s1070428024020027
日期:2024.2
Abstract 5-Hydroxymethylfuran-2-carbaldehyde reacts with aliphatic 1,2-hydroxyamine oximes in methanol to form 4,5-dialkyl-substituted 2-(5-hydroxymethylfuran-5-yl)-1H-imidazol-1-ols.