|
ИСТИНА |
Войти в систему Регистрация |
ИСТИНА ИНХС РАН |
||
Novel approach to the synthesis and optical absorption properties of 2-(2-oxo-1,2-dihydro-3H-pyrrole-3-ylidene)malononitrilesстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 9 апреля 2021 г.
- Авторы: Milovidova Angelina G., Belikov Mikhail Yu, Ievlev Mikhail Yu, Nasakin Oleg E., Ershov Oleg V., Tafeenko Viktor A.
- Журнал: Synthetic Communications
- Том: 51
- Номер: 5
- Год издания: 2021
- Издательство: Marcel Dekker Inc.
- Местоположение издательства: United States
- Первая страница: 727
- Последняя страница: 737
- DOI: 10.1080/00397911.2020.1852434
- Аннотация: Two approaches to the synthesis of 2-(2-oxo-5-aryl-1,2-dihydro-3H-pyrrol-3-ylidene)malononitriles (DCAA-pyrroles 1) were implemented. The first one was based on the transformation of 4-oxobutane-1,1,2,2-tetracarbonitriles 2 by the action of morpholine. The second approach was based on the reaction between protected form of 4-oxobutane-1,1,2,2-tetracarbonitriles 2 namely 2,7-dioxabicyclo[3.2.1]octane-4,4,5-tricarbonitriles 3 and morpholine. This approach involving sequential furan and pyran ring-opening of the 2,7-dioxabicyclo[3.2.1]octane moiety with further pyrrole ring-closure, resulted in a smoother formation of DCAA-pyrroles 1. The optical absorption properties of DCAA-pyrroles 1 were studied for the first time. The absorption maxima were observed in the range of 506-545 nm showing positive solvatochromism and dependence on the substituent in aryl moiety. [GRAPHICS]
- Добавил в систему: Тафеенко Виктор Александрович