Diastereoselective Synthesis of 2,3,4,5-Tetrasubstituted Isoxazolidines via 1,3-Dipolar Cycloaddition.

ChemInform ◽  
2005 ◽  
Vol 36 (1) ◽  
Author(s):  
Vellaisamy Sridharan ◽  
Shanmugam Muthusubramanian ◽  
Shanmugaperumal Sivasubramanian ◽  
Kurt Polborn
Keyword(s):  
Dipolar Cycloaddition ◽  
Diastereoselective Synthesis

Diastereoselective synthesis of 2,3,4,5-tetrasubstituted isoxazolidines via 1,3-dipolar cycloaddition

Tetrahedron ◽  
2004 ◽  
Vol 60 (40) ◽  
pp. 8881-8892 ◽  
Author(s):  
Vellaisamy Sridharan ◽  
Shanmugam Muthusubramanian ◽  
Shanmugaperumal Sivasubramanian ◽  
Kurt Polborn
Keyword(s):  
Dipolar Cycloaddition ◽  
Diastereoselective Synthesis

scholarly journals Diastereoselective synthesis of dispirooxindoles via [3+2] cycloaddition of azomethine ylides to 3-phenacylideneoxindoles and evaluation of their cytotoxicity

RSC Advances ◽  
2018 ◽  
Vol 8 (42) ◽  
pp. 23990-23995 ◽  
Author(s):  
Ying Huang ◽  
Yi-Xin Huang ◽  
Jing Sun ◽  
Chao-Guo Yan
Keyword(s):  
Azomethine Ylides ◽  
Dipolar Cycloaddition ◽  
Diastereoselective Synthesis ◽  
Three Component Reaction

The three-component reaction of 1,2,3,4-tetrahydroisoquinoline, isatins and 3-phenacylideneoxindoles in refluxing ethanol afforded dispiro[indoline-3,1′-pyrrolo[2,1-a]isoquinoline-3′,3′-indolines] (4a–4x) in good yields via 1,3-dipolar cycloaddition.

Enantio- and Diastereoselective Synthesis of Isoxazolidines by Asymmetric 1,3-Dipolar Cycloaddition of Nitrones

1997 ◽  
Vol 26 (6) ◽  
pp. 547-548 ◽  
Author(s):  
Yutaka Ukaji ◽  
Katsumi Taniguchi ◽  
Kazunori Sada ◽  
Katsuhiko Inomata
Keyword(s):  
Dipolar Cycloaddition ◽  
Diastereoselective Synthesis

1,3-Dipolar Cycloaddition of 3-Amino Oxindole-Based Azomethine Ylides and O-Vinylphosphonylated Salicylaldehydes for Diastereoselective Synthesis of Oxindole Spiro-P,N-polycyclic Heterocycles

Synthesis ◽  
2020 ◽  
Vol 52 (09) ◽  
pp. 1387-1397
Author(s):  
Mingshu Wu ◽  
Dulin Kong ◽  
Tiao Huang ◽  
Li Liu ◽  
Qinghe Wang
Keyword(s):  
Azomethine Ylides ◽  
Dipolar Cycloaddition ◽  
Diastereoselective Synthesis ◽  
Atom Economy ◽  
Assembly Strategy

An efficient stereoselective assembly strategy for the construction of pyrrolidin-2,3′-oxindole cis-fused phosphadihydrocoumarins was established. The process involves the condensation of O-vinylphosphonylated salicylaldehydes and 3-amino oxindoles followed by intermolecular cycloaddition with high diastereoselectivity and atom economy.

A Novel Four-Component Reaction for the Diastereoselective Synthesis of Some New Spiro Pyrrolizidines via 1,3-Dipolar Cycloaddition of Azomethine Ylides

Synthesis ◽  
2004 ◽  
Vol 2004 (14) ◽  
pp. 2263-2265 ◽  
Author(s):  
Javad Azizian ◽  
Ali Reza Karimi ◽  
Ali A. Mohammadi ◽  
Mohammad R. Mohammadizadeh
Keyword(s):  
Azomethine Ylides ◽  
Dipolar Cycloaddition ◽  
Diastereoselective Synthesis

scholarly journals Diastereoselective Synthesis of Spiro[Pyrrolo[2,1-B][1,3] Benzothiazole-3,5′-[1,3]Thiazolo[3,2-B][1,2,4]Triazol]-6′-Ones via Cycloaddition Reaction of Benzothiazolium Salts

2018 ◽  
Vol 42 (7) ◽  
pp. 371-373 ◽  
Author(s):  
Qing Zeng ◽  
Demin Ren ◽  
Yulin Huang ◽  
Xinliang Fu ◽  
Xiaofang Li
Keyword(s):  
Cycloaddition Reaction ◽  
Crystallographic Analysis ◽  
Azomethine Ylide ◽  
Dipolar Cycloaddition ◽  
Diastereoselective Synthesis ◽  
X Ray

The 1,3-dipolar cycloaddition reaction of (Z)-5-arylidene[1,3]thiazolo[3,2-b][1,2,4]triazol-6(5H)-one and azomethine ylide, which was generated in situ by the reaction of N-4-methoxyphenacylbenzothiazolium bromides and triethylamine, afforded novel 2-(aryl)-1-(4-methoxybenzoyl)-1,2-dihydrospiro[pyrrolo[2,1-b][1,3]benzothiazole-3,5′-[1,3]thiazolo[3,2-b][1,2,4]triazol]-6′-ones in moderate yields. The structures of all the products were characterised thoroughly by NMR, IR and HRMS spectroscopy together with X-ray crystallographic analysis.

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