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The enantioselective intramolecular C-H insertion and cyclopropanation reactions of donor- and donor/donor-carbenes by a nondiazo approach are reported. [ABSTRACT FROM AUTHOR]

A diagram is presented which explains the chemical process of base-promoted Domino Reaction for the synthesis of 2,3-Disubstituted Indoles from 2-Aminobenzaldehyde/2-Amino Aryl Ketones, Tosylhydrazine, and Aromatic Aldehydes.

Alkylidiene cyclic carbonates are prepared by carboxylative cyclization of propargylic alcohols with CO2 using ZnI2/NEt3 as synergistic catalytic system. [ABSTRACT FROM AUTHOR]

A diagram is presented which shows the derivatives of phenanthrene, the annulation of the catalysis of palladium, and the synthesis of phenanthrenes and dibenzochrysenes.

A variety of 2-hydroxydihydrofuran derivatives are synthesized under mild reaction conditions by a domino reaction of readily available 1,4-enediones with phenacyl pyridinium halides. [ABSTRACT FROM AUTHOR]

The title compounds (III) are obtained by reaction of CO2 with various propargylic amines using a combination of two ionic liquids as promoter under metal-free reaction conditions. [ABSTRACT FROM AUTHOR]

Intermediate formation of α-diazoketones (II) from glyoxal monohydrates (I) and tosylhydrazine is applied in the one-pot synthesis of 3-acylpyrazoles (IV) and (VI) as well as benzo[f]indazolediones (VIII) or chromeno[3,4-c]pyrazolones (XI). [ABSTRACT FROM AUTHOR]

A diagram of the access to polyfunctional pyrazoles by highly efficient regioselective multicomponent reaction is presented.

The article presents chemical equations related to the article "Stereoselective Synthesis of Fused Aziridines via One-Pot Sequential Decarboxylative Mannich Reaction and Oxidative C-H Amination of Cyclic Imines with -Ketoacids" by Bo-Nan Lai and others, published in the "Organic Letters" in 2016.

This new cyclization process proceeds in water under metal-free conditions to afford a series of sulfonylated products in good yields with C-S and C-I bond formation in one step. [ABSTRACT FROM AUTHOR]

An abstract of the article "Tandem Stereoselective Synthesis of New Trifluoromethylated Pyranopyrazoles" by J. Wang et al. is presented.

An abstract of the article "Broensted Acid Promoted Addition-Cyclization and C-C Bond Cleavage: A Convenient Synthesis of 2-Amino-5-aroylmethylthiazoles Derivatives" by Fan Ni and colleagues is presented.