Synthesen von ?,?-unges�ttigten 2-(2-Oxo-benzazolin-3-yl)-3-hydroxy-dithio-carbons�ure-alkylestern und entsprechend substituierten Keten-S,S-acetalen sowie deren Kristall- und Molek�lstruktur
摘要:
The new alkyl 2-(2-oxo-benzazoline-3-yl)-3-hydroxy dithiocrotonates and dithiocinnamates 4 and the corresponding ketene dithioacetals 2 and 5 are obtained by dithiocarboxylation of the 3-acceptormethyl substituted benzazoline-2-ones 1 or 3. Alkylation at room temperature gives compounds 4 whereas at higher alkylation temperature 2 or 5 are formed. The results of X-ray analyses performed for methyl 3-hydroxy-p-chloro-dithiocinnamate 4d and of N-[1-(4-chloro-benzoyl)-2,2-bis(methylthio)-vinyl]-benzothiazoline-2-one 5e are discussed.
Synthesen von ?,?-unges�ttigten 2-(2-Oxo-benzazolin-3-yl)-3-hydroxy-dithio-carbons�ure-alkylestern und entsprechend substituierten Keten-S,S-acetalen sowie deren Kristall- und Molek�lstruktur
The new alkyl 2-(2-oxo-benzazoline-3-yl)-3-hydroxy dithiocrotonates and dithiocinnamates 4 and the corresponding ketene dithioacetals 2 and 5 are obtained by dithiocarboxylation of the 3-acceptormethyl substituted benzazoline-2-ones 1 or 3. Alkylation at room temperature gives compounds 4 whereas at higher alkylation temperature 2 or 5 are formed. The results of X-ray analyses performed for methyl 3-hydroxy-p-chloro-dithiocinnamate 4d and of N-[1-(4-chloro-benzoyl)-2,2-bis(methylthio)-vinyl]-benzothiazoline-2-one 5e are discussed.