close

Вход

Забыли?

вход по аккаунту

?

код для вставки
2005
Multi-membered O,S-heterocycles
R 0691
Synthesis of Medium- and Large-Sized Lactones in an Aqueous—Organic BiphaSystem. — The title lactones are formed with high stereoselectivity from acetoxy35- 192 sic
alkenyl keto esters by use of ligand PHO. They retain the original configuration of the
olefin moiety. Lactones (IIa) and (IIb) consists of two diastereomers due to the planar
chirality of their trans olefinic linkage. Substrate (IV) does not give the expected lactone (VI) but pyranone (V) as keto/enol mixture. — (KINOSHITA, H.;
SHINOKUBO*, H.; OSHIMA, K.; Angew. Chem., Int. Ed. 44 (2005) 16, 2397-2400;
Dep. Chem., Grad. Sch. Sci., Kyoto Univ., Sakyo, Kyoto 606, Japan; Eng.) — Klein
Документ
Категория
Без категории
Просмотров
0
Размер файла
23 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа