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Glycerol is a new green organic solvent. It not only acts as a phase transfer catalyst but also as a recyclable solvent by significantly enhancing the intramolecular cyclization. A series of 4-aryl-7,7 -dimethyl-5-oxo-3,4,5,6,7,8-hexahydrocoumarin derivatives were synthesized by one-pot multicomponent reaction of Meldrum’s acid with benzaldehyde, and cyclohexanedione in glycerol. Compared to classic methods, this method has the advantages of milder reaction conditions, good yields, easy processing and environmental benignity. [ABSTRACT FROM AUTHOR]

Acyl chlorides reacted with ammonium thiocyanate and carbonic dihydrazide under phase‐transfer catalysis to first afford 2,2′‐bis(acylaminothiocarbonyl)‐carbonic dihydrazides, which further cyclized in the presence of glacial acetic acid to efficiently give 1‐(5′‐acylamino‐1′,3′,4′‐thiadiazol‐2′‐yl)‐4‐acyl‐thiosemicarbazides in high yield. [ABSTRACT FROM AUTHOR]

An abstract of the study "Palladium Catalyzed Mizoroki-Heck Reaction of Pyrimidin-2-yl Tosylates with Aromatic and Aliphatic Olefins" is presented.

An Fe(III)-catalyzed cross-coupling of N-heteroaromatic tosylates with aryl and alkyl Grignard reagents is presented. [ABSTRACT FROM AUTHOR]

The allylation reaction proceeds with high regioselectivity and has a broad substrate scope. [ABSTRACT FROM AUTHOR]

A diagram is presented which explains the process of Ni-Catalyzed Suzuki—Miyaura Coupling Reactions of Pyrimidin-2-yl Phosphates, Tosylates and Pivalates with Arylboronic Ac and describes the chemical equations in this process with ten molecules involved.

Furthermore, similar reaction conditions also allow the C-S coupling of aryl halides with 4-methylbenzenethiol. [ABSTRACT FROM AUTHOR]

Pyrimidine- and pyridine phosphates react with alkyl and aryl Grignard reagents in the presence of Fe(acac)3 under mild conditions to give the title compounds at room temperature within 15 minutes. [ABSTRACT FROM AUTHOR]

The title reactions between substituted pyrimidin-2-yl sulfonates [e.g. (I)] and arylboronic acids, terminal alkynes, or anilines give the cross-coupling products in good yields with wide substrate scope. [ABSTRACT FROM AUTHOR]

Arylboronic acids with strong electron-withdrawing groups (e.g., 4-CHO, 4-Ac or 4-COOH) do not react with compound (I) and also diallyl and di-tert-butyl disulfides fail in the reaction with (IIa). [ABSTRACT FROM AUTHOR]

The protocol for the chemoselective coupling reaction affords either a C-S bond in presence of ferrocene catalyst or the formation of a C-C bond in presence of palladium acetate catalyst. [ABSTRACT FROM AUTHOR]

It is found that potassium phosphate used as base favors the formation of secondary amines (III), (VI), whereas tertiary amines (IV),(VII) are obtained when tBuONa is used. [ABSTRACT FROM AUTHOR]

The article presents a chemical reactions polysubstituted tetrahydro-4H-pyrido[1,2-a]pyrimidines by using acylation-hydration-michael addition process.

An abstract of the article "Ligand-Free CuTC-Catalyzed N-Arylation of Amides, Anilines and 4-Aminoantipyrine: Synthesis of N-Arylacrylamides, 4-Amido-N-phenylbenzamides and 4-Amino(N-phenyl) antipyrenes" by Zheng-Jun Quan, Hai-Dong Xia and colleagues is presented.

The article presents chemical equations for article "Palladium(II) Catalyzed Suzuki/Sonogashira Cross-Coupling Reactions of Sulfonates: An Efficient Approach to C2-Functionalized Pyrimidines and Pyridines" by Z-J Quan and others, published in periodical "European Journal of Organic Chemistry in 2013.

A novel method using CuSO4/sodium ascorbate as the catalyst system allows the synthesis of various secondary amides including the title amides, which are difficult to obtain by classical methods. [ABSTRACT FROM AUTHOR]

This one-pot, two-step protocol gives rise to N-functionalized triazoles by a Cu(I)-catalyzed multicomponent reaction between dihydropyrimidinones, paraformaldehyde, sodium azide, and alkynes. [ABSTRACT FROM AUTHOR]