描述了新型的二氢吡喃并[2,3- d ]嘧啶和二氢吡喃并[3,2 - c ]色铬修饰的苯并阿舒他姆的无催化剂和非对映选择性合成。合成了许多(E)-N-(2-甲酰基苯基)-N-甲基-2-苯基乙磺酰胺,并分别与N,N-二甲基巴比妥酸和4进行了一锅多米诺Knoevenagel杂Diels-Alder反应。-羟基香豆素在水中,以中等至极好的收率得到所需的产物。
isothiazoloisoxazole-4,4-dioxide, pyrazoloisothiazole-1,1-dioxide, [1,2]thiazinoisoxazole-4,4-dioxide and benzo[1,2]thiazinoisoxazole-4,4-dioxide systems have been obtained by intramolecular 1,3-dipolar cycloaddition, starting from substituted α- and β-sulfonamides.
The synthesis of novel pyrrolidine or pyrrolizine‐fused benzosultams is described. A number of (E)‐N‐(2‐formylphenyl)‐N‐alkyl‐2‐phenylethenesulfonamides derivatives were synthesized and subjected to intramolecular [3 + 2] cycloaddition with azomethine ylides derived in situ from the reaction with sarcosine, phenylglycine, and L‐proline.
Expedient synthesis of novel coumarin-based sulfonamides
作者:Mehdi Ghandi、Elham Babazadeh
DOI:10.1007/s13738-014-0494-7
日期:2015.3
The synthesis of novel coumarin-based sulfonamides was accomplished in good yields via InCl3-catalyzed three-component condensation of N-(2-formylphenyl)-N-methylbenzenesulfonamides, 4-hydroxycoumarin and cyclic secondary amines in toluene.
Efficient synthesis of pentacyclic benzosultam-annulated thiopyranoindoles via domino Knoevenagel / intramolecular hetero-Diels–Alder reactions in water
A convenient catalyst-free synthesis of hitherto unknown pentacyclic benzosultam-annulated thiopyranoindole derivatives is reported which proceeds viadomino Knoevenagel / intramolecular hetero-Diels–Alder reactions of (E)-N-alkyl-2-aryl-N-(2-formylphenyl)ethene-1-sulfonamides with indoline-2-thiones in water. The products were obtained regioselectively in high yields.