close

Вход

Забыли?

вход по аккаунту

?

код для вставки
2005
Benzopyran derivatives
R 0350
A Three-Component Reaction of Phenol, Aldehyde, and Active Methylene Subunder Lewis Acid Catalysis: Successful Trapping of o-Quinone Methide to
03- 134 strate
Afford Benzopyran Systems. — The use of salicylaldehyde (VIII) in the title reaction
affords novel bridged bichromans, such as (IX). The formation of (IX) is rationalized
via the initially formed hydroxy-chromene followed by nucleophilic attack of the phenolic OH-group on an oxonium intermediate, formed after protonation of the enolether
moiety. — (MASHRAQUI*, S. H.; PATIL, M. B.; MISTRY, H. D.;
GHADIGAONKAR, S.; MEETSMA, A.; Chem. Lett. 33 (2004) 8, 1058-1059; Dep.
Chem., Univ. Mumbai, Vidyanagari, Mumbai 400 098, India; Eng.) — M. Paetzel
Документ
Категория
Без категории
Просмотров
0
Размер файла
139 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа