Solvent-free Michael addition of 2-cyclohexenone under ultrasonic irradiation in the presence of long chain dicationic ammonium salts

Autor:	Feray Aydoğan, Aytek Öge, Murat Emrah Mavis, Cigdem Yolacan
Rok vydání:	2012
Předmět:	Solvent Ultrasonic irradiation chemistry.chemical_compound Michael addition phase-transfer catalyst ultrasound-assisted synthesis solvent-free reaction 2-cyclohexenone chemistry Michael reaction Organic chemistry Ammonium General Chemistry Methylene Phase-transfer catalyst Long chain Catalysis
Zdroj:	Volume: 36, Issue: 1 137-146 Turkish Journal of Chemistry
ISSN:	1303-6130 1300-0527
DOI:	10.3906/kim-1104-63
Popis:	Long chain dicationic ammonium salts (1a-1c), easily prepared from tert-amines and dihaloalkanes, were successfully used as efficient phase-transfer catalysts in the Michael addition reaction of various active methylene compounds to 2-cyclohexenone without solvent under ultrasonic irradiation. The investigated dicationic salts were more effective than monocationic tetrabutylammonium bromide, with short reaction times and high yields. This methodology was established under phase-transfer catalytic conditions and ultrasonic effects with many advantages, including the easy and cost-effective synthesis of the catalyst, mild reaction conditions, short reaction times, good yields, simple work-up procedures, and environmental friendliness.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9a68a70c3e6f4f4ee0b63450f220e1ed https://doi.org/10.3906/kim-1104-63 Zobrazit plný text záznamu