Beyond sulfide-centric catalysis: recent advances in the catalytic cyclization reactions of sulfur ylides

2017 ◽  
Vol 46 (14) ◽  
pp. 4135-4149 ◽  
Author(s):  
Liang-Qiu Lu ◽  
Tian-Ren Li ◽  
Qiang Wang ◽  
Wen-Jing Xiao

This Tutorial Review highlighted recent achievements on the catalytic cyclization reactions of sulfur ylide reagents, especially the asymmetric processes avoiding the use of structurally complex chiral sulfides.

Synlett ◽  
2018 ◽  
Vol 30 (01) ◽  
pp. 21-29 ◽  
Author(s):  
Jiang Cheng ◽  
Xiaopeng Wu ◽  
Song Sun ◽  
Jin-Tao Yu

Sulfoxonium ylides are a special type of sulfur ylides that serve as new C1 or C2 synthons recently developed for use in C–H functionalization to access acylmethylated or cyclized compounds through the formation of metal carbene species. Many excellent works have reported the syntheses of various useful skeletons from these versatile synthons. These developments have not previously been completely investigated or reviewed. In this review, we summarize recent advances in the use of α-carbonyl sulfoxonium ylides in C–H functionalizations, including ortho-C–H acylmethylation reactions and ortho-C–H activation/cyclization reactions. Table of Contents 1 Introduction2 Ortho-C–H Acylmethylation Reactions3 Ortho-C–H Activation/Cyclization Reactions3.1 Ortho-C–H Activation/Cyclization of Anilines and Enamines3.2 Ortho-C–H Activation/Cyclization of Azobenzenes3.3 Ortho-C–H Activation/Cyclization of N-Methoxybenzamide3.4 Ortho-C–H Activation/Cyclization of Imines3.5 Ortho-C–H Activation/Cyclization of N-Azoloimines3.6 Ortho-C–H Activation/Cyclization of Benzoylacetonitriles3.7 Ortho-C–H Activation/Cyclization of Benzoyl Sulfoxonium Ylides4 Conclusion


ChemInform ◽  
2010 ◽  
Vol 33 (52) ◽  
pp. no-no
Author(s):  
Iwao Ojima ◽  
Andrew C. Moralee ◽  
Victor C. Vassar

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Lei Li ◽  
Min Yang ◽  
Qiuqin He ◽  
Renhua Fan

Abstract Insertion of atoms into aromatic carbon-nitrogen bonds is an appealing method for the synthesis of nitrogen-containing molecules and it has the advantage of the availability and abundance of anilines. However, the direct cleavage of aromatic carbon-nitrogen bonds is challenging due to the particularly inert and stable nature of these bonds. Here we report a formal, enantioselective one-carbon insertion into an aromatic carbon-nitrogen bond via an aromaticity dissembly-reconstruction process to directly convert anilines to chiral α-branched benzylic amines. The process involves oxidative dearomatization of para-substituted anilines, chiral sulfur ylide-mediated asymmetric aziridination, and subsequent rearrangement. Chiral sulfur ylides serve as one-carbon insertion units.


1985 ◽  
Vol 40 (3) ◽  
pp. 373-379 ◽  
Author(s):  
Lothar Weber

3a-dη5-Thiacyclohexadienyl-1-oxide chromium complexes are generated by treatment of the 1-methyl-thiabenzene-1-oxide complexes 1a-d with Li[BHEt3] and successive nitrosylation of the intermediates 2a-d. 3a-d react with Me2S(O) = CH2 or Ph3P=CH2 at a carbonyl ligand in an additon/transylidation process to yield the very sensitive products 5, 6a-d.


Synthesis ◽  
2017 ◽  
Vol 49 (22) ◽  
pp. 4931-4941 ◽  
Author(s):  
Nicklas Selander ◽  
Stalin Pathipati ◽  
Angela van der Werf

The use of a well-chosen catalyst is instrumental for the development of more efficient, economical and environmentally friendly reactions. In recent decades, indium-based catalysts have proven to be competitive and useful alternatives to transition-metal catalysts such as silver and gold. In this short review, we present some of the recent advances in indium(III)-catalyzed transformations of alkynes, with a focus on cyclization reactions.1 Introduction2 Terminal Alkynes as Nucleophiles3 Nucleophilic Additions to Alkynes4 Carbo- and Heterocyclization Reactions4.1 Carbocyclization4.2 Oxygen-Based Heterocycles4.3 Nitrogen-Based Heterocycles4.4 Sulfur-Based Heterocycles5 Conclusion


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