Reactions of vinyl sulfone with α-diazo-β-ketosulfone and Bestmann–Ohira reagent for the regioselective synthesis of highly functionalized pyrazoles
作者:Rahul Kumar、Deepa Nair、Irishi N.N. Namboothiri
DOI:10.1016/j.tet.2014.01.022
日期:2014.3
The 1,3-dipolarcycloaddition of diazomethylsulfone anion, generated in situ from α-diazo-β-ketosulfone, with vinyl sulfone proceeds in a regioselective manner to provide sulfonylpyrazoles. Similar reaction of diazomethylphosphonate anion, derived from Bestmann–Ohira reagent, with vinyl sulfone leads to phosphonylpyrazoles. The sulfonyl group of vinyl sulfone undergoes chemoselective elimination in
Studies With Pyridinethiones: A Convenient Synthesis of Polyfunctionally Substituted Pyridine Ring Systems
作者:Yehya Mahmoud Elkholy、Fathi Ali Abu-shanab、Ayman Wahba Erian
DOI:10.1080/10426500008082395
日期:2000.1.1
Abstract 1-Benzoyl-1-phenylsulfone-2-ethoxyethene 3 has been prepared via reaction of phenacyl sulfone 1 with triethylorthoformate. Compound 3 can be used for prepration of pyridinethione, which could be annulated into fused various heterocyclic ring systems.
Organocatalytic Domino Reaction of Cyanosulfones: Access to Complex Cyclohexane Systems with Quaternary Carbon Centers
作者:Sundaram Rajkumar、Kenneth Shankland、Jonathan M. Goodman、Alexander J. A. Cobb
DOI:10.1021/ol400356k
日期:2013.3.15
of a bifunctionalthiourea catalyst, a highlystereoselective domino reaction occurs to generate complex cyclohexanes with up to four stereogenic centers, one of which is quaternary in nature. Therefore, it is demonstrated that, like nitro compounds, sulfones can undergo an asymmetric intramolecular conjugate addition to α,β-unsaturated esters in the presence of a bifunctionalorganocatalyst.
Green approach to synthesis of novel and broad-range diversity of 4-(aryl)-3-(phenylsulfonyl)-4H-benzo[h]chromen-2-amine derivatives
作者:Abdollah Morshedi、Hamid Reza Shaterian
DOI:10.1007/s11164-018-3552-4
日期:2018.12
Abstract One-pot, three-component condensation reaction between (phenylsulfonyl)acetonitrile, aromatic aldehydes, and α-naphthol for preparation of 4-(aryl)-3-(phenylsulfonyl)-4H-benzo[h]chromen-2-amine derivatives has been reported. The method involves domino Knoevenagel condensation/Michaeladdition, and cyclization cascade. The reaction was performed in glycerol, which is a commercially available
摘要 (苯磺酰基)乙腈,芳香醛与α-萘酚的一锅三组分缩合反应,用于制备4-(芳基)-3-(苯磺酰基)-4 H-苯并[ h ]铬-2-胺衍生物已经被报告了。该方法涉及多米诺Knoevenagel缩合/迈克尔加成和环化级联。该反应在甘油中进行,甘油是一种可商购的,廉价且无毒的化合物。产品的高纯度,极高的收率和广泛的底物是该方案的优点。 图形概要
Green approach to synthesis of new series of 6,8a-dihydropyrido[2,3-d]pyrimidine derivatives
作者:Abdollah Morshedi、Hamid Reza Shaterian
DOI:10.1007/s13738-018-1528-3
日期:2019.3
One-pot, three-component condensation reaction between (phenylsulfonyl)acetonitrile, aromatic aldehydes, and 6-aminouracil for preparation of 6,8a-dihydropyrido[2,3-d]pyrimidine derivatives has been reported. The method involves domino Knoevenagel condensation/Michaeladdition, and cyclization cascade. The reaction was performed in glycerol which is commercially available, inexpensive and non-toxic
已经报道了(苯磺酰基)乙腈,芳族醛和6-氨基尿嘧啶的一锅三组分缩合反应,用于制备6,8a-二氢吡啶并[2,3- d ]嘧啶衍生物。该方法涉及多米诺Knoevenagel缩合/迈克尔加成和环化级联。该反应在甘油中进行,甘油是可商购的,廉价且无毒的化合物。产品的高纯度,极高的收率和广泛的底物是该方案的优点。