Nitrosonium ion catalysis: aerobic, metal-free cross-dehydrogenative carbon–heteroatom bond formation

Catalytic cross-dehydrogenative coupling of heteroarenes with thiophenols and phenothiazines has been developed under mild and environmentally benign reaction conditions

Analysis of correlation between indicators of financial activities

The article presents the results of the study between the indicators of the financial activity of the enterprise, which fully reflect the entire financial and economic activity of the enterprise. Based on Student's t-criterion, the existence of more significant correlations between the indicators of the financial activity of the enterprise is proved. To date, this study continues in the direction of assessing the performance of indicators

[1+1+1] Cyclotrimerization for the Synthesis of Cyclopropanes.

The synthesis of small rings by functionalization of C(sp(3) )-H bonds remains a great challenge. We report for the first time a copper-catalyzed [1+1+1] cyclotrimerization of acetophenone derivatives under mild reaction conditions. The reaction has a broad scope for the stereoselective synthesis of cyclopropanes by trimerization of acetophenone. The developed transformation is based on an extraordinary copper-catalyzed cascade process that allows saturated carbocycles to be obtained for the first time by cyclotrimerization through functionalization of C(sp(3) )-H bonds. The cascade of sixfold C(sp(3) )-H bond functionalization allows the synthesis of cyclopropanes in a highly stereoselective approach

Rhodium(III)-Catalyzed Direct Oxidative Cross Coupling at the C5 Position of Chromones with Alkenes

An atom-economical, Rh(III)-catalyzed, direct oxidative cross-coupling at the C5 position of chromones and flavones with a broad range of alkenes was developed. The products were formed in a highly regioselective manner in good to excellent yields. The developed method was applied in the cross-coupling of natural products for the synthesis of hybrid molecules

Rhodium(III)-Catalyzed Direct Regioselective Synthesis of 7‑Substituted Indoles

An efficient, atom-economic one-pot method was developed for the preparation of 7-substituted indoles via rhodium(III)-catalyzed oxidative cross-coupling. Regioselective olefination of indoline derivatives followed by one-pot subsequent oxidation provided the desired products in good to excellent yields

Synthesis of hexadeuterated 23-dehydroxybrassinosteroids

Two hexadeuterated brassinosteroids (BS) ([26,27-H-2(6)]-23- dehydroxycastasterone and [26,27-H-2(6)]-cathasterone) containing a hydroxy group at C-22 instead of the 22R,23R-diol function characteristic for most compounds of this class were prepared fo

Organocatalytic, Oxidative, Intermolecular Amination and Hydrazination of Simple Arenes at Ambient Temperature

New atom-economical, environmental friendly, direct oxidative intermolecular processes of amination and hydrazination of nonprefunctionalized arenes were developed. The products were formed in a good regioselective manner under organocatalytic conditions at ambient temperature