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The three-component reaction of thiourea, aldehydes, and ketoester (III) allows the synthesis of a wide range of pyrimidine derivatives in high yields with excellent enantioselectivities. [ABSTRACT FROM AUTHOR]

The reaction can be scaled up. [ABSTRACT FROM AUTHOR]

The new compounds (VI) and (VIII) are characterized by single crystal XRD, IR and UV spectroscopy, and electrocatalytic investigations. [ABSTRACT FROM AUTHOR]

Review: about 200 refs. [ABSTRACT FROM AUTHOR]

(N2H4)3 (N2H5)4Sn2Se6 complexes, synthesized by dissolving elemental tin and selenium in hydrazine under ambient conditions, are used as precursors for SnSe2 deposition on TiO2 nanocrystalline porous films. [ABSTRACT FROM AUTHOR]

The novel bipyrrolidine catalyst exhibits superior catalytic activity over traditional pyrrolidine catalysts and allows the synthesis of Michael adducts (III) with high levels of stereoselectivity. [ABSTRACT FROM AUTHOR]

Propargylic alcohols are efficiently converted into 3,4,5-substituted pyrazoles in the presence of FeCl3 as catalyst tolerating various substitution pattern. [ABSTRACT FROM AUTHOR]

Using phenyliodonium ylide malonate (I) the cyclopropanation of terminal (II) as well as di- and trisubstituted olefins proceeds highly enantioselectively. [ABSTRACT FROM AUTHOR]

Review: 111 refs. [ABSTRACT FROM AUTHOR]

An abstract of the article "Aerobic α-Hydroxylation of β-Keto Esters and Amides by Co-Catalysis of SmI

The metal-free procedure provides the products in an operationally simple, diastereoselective one-step manner. [ABSTRACT FROM AUTHOR]

The title compounds are obtained as single diastereomers under mild and catalyst-free reaction conditions involving a cascade process of [4+2]-cyclization and subsequent intramolecular nucleophilic addition. [ABSTRACT FROM AUTHOR]

The optimized conditions shown in the scheme are elaborated and tested in the annulation process. [ABSTRACT FROM AUTHOR]

The resulting allylic alkylation products (III) contain two adjacent stereogenic centers and three functional groups that can be easily elaborated into more complex compounds such as oxazine (V). [ABSTRACT FROM AUTHOR]

The article presents chemical equations related to the article "Total Synthesis of ent-(-)-Azonazine Using a Biomimetic Direct Oxidative Cyclization and Structural Reassignment of Natural Product" by H.-B. Qiu and others, published in the journal "Tetrahedron" in 2014.

Gold-catalyzed ring enlargement of N-propargylated β-tetrahydrocarbolines offers a general approach to 1H-azocino[5,4-b]indoles. [ABSTRACT FROM AUTHOR]

The first total synthesis of ent-(-)-azonazine (I) is accomplished using a hypervalent iodine-mediated biomimetic oxidative cyclization to construct the highly strained core (not shown). [ABSTRACT FROM AUTHOR]

The newly developed methodology is applicable to a broad spectrum of substrates establishing dense multiple chiral centers including quaternary carbons of variable bridged ring systems. [ABSTRACT FROM AUTHOR]

A novel methodology to construct the indolo[1,2-c]quinazoline framework is developed using a 5-endo-dig hydroamination and intramolecular cyclization of monoacylated bis(2-aminophenyl)alkynes. [ABSTRACT FROM AUTHOR]

An abstract of the article "Asymmetric One-Pot Sequential Mannich/ Hydroamination Reaction by Organ and Gold Catalysts: Synthesis of Spiro [pyrrolidin-3,2'-oxindole] Derivatives" by Xianjie Chen, Hui Chen, Xun Ji, Hualiang Jiang, Zhu-Jun Yao, and Hong Liu is presented.

A tandem reaction initiated by Au(I)-catalyzed C1-C5 cyclization of enediynes (I) and (III) bearing an internal carboxy nucleophile is developed, providing a novel route for the assembly of fused indene derivatives (II) and (IV). [ABSTRACT FROM AUTHOR]

The reaction conditions (silver-free) are optimized for the preparation of the alkaloid scaffolds. [ABSTRACT FROM AUTHOR]

The reaction proceeds with moderate dia- and high enantioselectivity. [ABSTRACT FROM AUTHOR]

A new organocatalytic enantioselective Michael addition of α-aryl-β-ketoesters to unsaturated aldehydes affords bicyclononadienones under mild conditions. [ABSTRACT FROM AUTHOR]

Dimerization of o-alkynylbenzaldehydes towards Kagan′s ether analogues proceeds smoothly in the presence of aqueous HBF4 in acetic acid. [ABSTRACT FROM AUTHOR]

The reaction between starting materials (I) and electron-deficient alkenes is studied to yield polycyclic products diastereoselectively. [ABSTRACT FROM AUTHOR]