Enantioselective Synthesis of 5-Alkylated Thiazolidinones via Palladium-Catalyzed Asymmetric Allylic C–H Alkylations of 1,4-Pentadienes with 5<i>H</i>-Thiazol-4-ones
作者:Tian-Ci Wang、Zhi-Yong Han、Pu-Sheng Wang、Hua-Chen Lin、Shi-Wei Luo、Liu-Zhu Gong
DOI:10.1021/acs.orglett.8b01697
日期:2018.8.17
A palladium-catalyzed, enantioselective allylic C–H alkylation of 1,4-pentadienes with 5H-thiazol-4-ones has been developed. Under the cooperative catalysis of a palladium complex of chiral phosphoramidite ligand and an achiral Brønstedacid, a broad range of substituted 5H-thiazol-4-ones bearing sulfur-containing tertiary chiral centers were accessed from the allylic C–H alkylation in high levels
SYNTHESIS OF HETEROCYCLES ON THE BASIS OF ARYLATION PRODUCTS OF UNSATURATED COMPOUNDS. 11.<sup>1</sup>5-R-BENZYL-2- IMINOSELENAZOLIDIN-4-ONES FROM ETHYL 3-ARYL-2-BROMOPROPANOATES
作者:Mykola D. Obushak、Vasyl S. Matiychuk、Volodymyr M. Tsyalkovsky、Roman M. Voloshchuk
DOI:10.1080/10426500490257096
日期:2004.1
3-aryl-2-bromopropanoates 2a–p were prepared by reaction of ethyl acrylate with arenediazonium bromides 1a–p in the presence of CuBr (Meerwein arylation). These compounds react with selenourea to form 5-R-benzyl-2-iminoselenazolidin-4-ones 4a–p. Compounds 4a–p hydrolyze into the corresponding selenazolidin-2,4-diones.
Synthesis of heterocycles from products of the anion arylation of unsaturated compounds. 3. 2-arylimino-5-arylmethyl-4-thiazolidones
作者:N. D. Obushak、V. S. Matiichuk、N. I. Ganushchak、Yu. É. Burlak
DOI:10.1007/bf02290893
日期:1998.4
Synthesis and Antimicrobial Activity of 2-[5-(R-Benzyl)-4-oxo-1,3-thiazolidin-2-ylidene]-3-oxobutanenitrile and [2-(1-Cyano-2-oxopropylidene)-4-oxo-1,3-thiazolidin-5-ylidene]acetic Acid Derivatives
作者:V. Ya. Horishny、V. S. Matiichuk
DOI:10.1134/s1070428020090092
日期:2020.9
The reactions of 2-cyano-3-oxobutanethioamide with ethyl 3-aryl-2-bromopropanoates and dialkyl acetylenedicarboxylates afforded a combinatorial library of new 2-[5-(R-benzyl)-4-oxo-1,3-thtiazolidin-2-ylidene]-3-oxobutanenitrile and [2-(1-cyano-2-oxopropylidene)-4-oxo-1,3-thiazolidin-5-ylidene]acetic acid derivatives. The synthesized compounds were evaluated for antimicrobial activity, and the activity of some derivatives against gram-positiveStaphylococcus aureusATCC 43300 exceeded the activity of ceftriaxone taken as a reference drug.