

2021 № 2 (644) p. 99–216
Table of Contents
Anniversaries and dates
PROFESSOR, DOCTOR OF CHEMICAL SCIENCES LEONID ISAAKOVICH BELEN'KII. TO THE 90TH BIRTHDAY |
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99-100 |
PROFESSOR, DOCTOR OF CHEMICAL SCIENCES VIKTOR IVANOVICH MARKOV. TO THE 85TH BIRTHDAY |
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101-102 |
Review Articles
PRIORITY DIRECTIONS IN THE DESIGN OF BIOLOGICALLY ACTIVE COMPOUNDS BASED ON 2-AMINOPYRIMIDIN-4(3H)-ONE AND ITS DERIVATIVES |
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Андрей В. Еркин, Виктор И. Крутиков, Александр В. Гарабаджиу | 103-121 |

ISOMERIZATION AND CHANGES OF THE PROPERTIES OF SPIROPYRANS BY MECHANICAL STRESS: ADVANCES AND OUTLOOK |
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Артем Д. Пугачев, Евгений Л. Муханов, Илья В. Ожогин, Анастасия С. Козленко, Анатолий В. Метелица, Борис С. Лукьянов | 122-130 |

Heterocycles in Focus
NEW METHODS FOR SYNTHESIS OF 1-BENZOTHIOPHENE-3-CARBOXYLIC ACID DERIVATIVES |
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Валерия А. Литвинова, Александр С. Тихомиров | 131-133 |

FREE-RADICAL AND ELECTROPHILIC FUNCTIONALIZATION OF PYRAZOL-3-ONES WITH C–O OR C–N BOND FORMATION |
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Elena R. Lopat'eva, Igor B. Krylov | 134-136 |

Original Papers
SYNTHESIS OF NOVEL 3-ARYLATED 2-HYDROXY-1,4-NAPHTHOQUINONE DERIVATIVES via MICROWAVE-ASSISTED THREE-COMPONENT DOMINO REACTION AND EVALUATION OF THEIR CYTOTOXIC ACTIVITY |
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Tuyet Anh Dang Thi, Giang Le-Nhat-Thuy, Quynh Giang Nguyen Thi, Phuong Hoang Thi, Anh Nguyen Tuan, Ha Hoang Mai, Thanh Nguyen Ha, Tuan Anh Le, Tuyen Van Nguyen | 137-142 |

ATOM-EFFICIENT SYNTHESIS OF HYBRID MOLECULES COMBINING FRAGMENTS OF TRIAZOLOPYRIMIDINES AND 3-ETHOXYCARBONYL-1-ETHYL-6-FLUOROQUINOLIN-4(1H)-ONE THROUGH 1,2,3-TRIAZOLE LINKER |
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Konstantin V. Savateev, Pavel A. Slepukhin, Svetlana K. Kotovskaya, Valery N. Charushin, Vladimir L. Rusinov, Oleg N. Chupakhin | 143-153 |

RECYCLIZATION OF N-ARYLITACONIMIDES WITH CARBOXIMIDAMIDES – A NOVEL EFFICIENT METHOD FOR THE SYNTHESIS OF 2-(2-AMINO-6-OXO-1,4,5,6-TETRAHYDROPYRIMIDIN-5-YL)ACETANILIDES |
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Никита М. Сотников, Юрий А. Ковыгин, Дмитрий Ю. Вандышев, Ирина В. Леденёва, Евгения А. Кошелева, Олег А. Козадёров, Хидмет С. Шихалиев | 154-158 |

SYNTHESIS OF 1,2-DIHYDROISOQUINOLINE-1-CARBOXYLATES UNDER COBALT CATALYSIS |
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Paula Amanda Zagorska, Liene Grigorjeva, Jekaterina Bolsakova | 159-165 |

SNH-ARYLAMINATION OF 1-METHYLQUINOLIN-2(1H)-ONE NITRO DERIVATIVES |
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Олег П. Демидов, Диана Ю. Побединская, Анастасия А. Боровлева, Елена К. Авакян, Артем П. Ермоленко, Александр В. Аксенов, Иван В. Боровлев | 166-174 |

HIGHLY EFFICIENT PHOSPHINE-CATALYZED ROUTES TO α-IMIDOACRYLATES AND 2,3-DIIMIDOPROPANOATES |
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Anton V. Il'in, Arthur F. Gubaev, Daut R. Islamov, Karim R. Islamov, Vladimir I. Galkin | 175-180 |


SYNTHESIS OF 4-ETHOXYCARBONYL(CYANO)-β-CARBOLINES via THERMOLYSIS OF 4-ARYL-3(5)-AZIDOPYRIDINE DERIVATIVES AND THE STUDY OF THEIR OPTICAL AND HYPOGLYCEMIC PROPERTIES |
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Виктория A. Прощенкова, Владислав Ю. Шувалов, Лариса В. Глиздинская, Александр С. Фисюк, Сергей А. Черненко, Михаил В. Хвостов, Татьяна Г. Толстикова, Марина А. Воронцова, Галина П. Сагитуллина | 187-198 |

A BECKMANN REARRANGEMENT INITIATED BY TRIFLUOROMETHANESULFONIC ANHYDRIDE IN THE SYNTHESIS OF COMPOUNDS CONTAINING A NEW PYRAZOLO[3',4':5,6]PYRIDO[3,2-b]AZEPINE HETEROCYCLIC SYSTEM |
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Георгий Г. Яковенко, Марта С. Ягодкина-Яковенко, Сергей Ю. Суйков, Михаил В. Вовк | 199-206 |

A STUDY OF ATYPICAL REACTION OF METHYL (TRIPHENYLPHOSPHORANYLIDENE)ACETATE WITH 3a-SUBSTITUTED BICYCLIC β-KETO-γ-SULTAMS |
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Taras V. Omelian, Pavlo O. Iegorov, Anton O. Poliudov, Alexey V. Dobrydnev, Eugeniy N. Ostapchuk, Yulian M. Volovenko | 207-211 |

Notices
INSTRUCTIONS TO AUTHORS |
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212-216 |
Latvian Institute of Organic Synthesis - Aizkraukles iela, 21, Riga, LV-1006, Latvia - hgs@osi.lv