Synthese und Reaktionsverhalten von 3-(Bis(alkylthio)methylen)-3H-isobenzofuran-1-on-und 2-(Bis(alkylthio)methylen)-3(2H)-benzofuranon-Derivaten
摘要:
3(Bis(alkylthio)methylene)-3H-isobenzofuran-1-ones 2a-e and 2-(bis(alkylthio)methylene)-3(2H)-benzofuranone derivatives 4a-c are obtained by reaction of phthalides 1a-d or 3(2H)-benzofuranone (coumaranone 3), respectively, with carbon disulfide under basic conditions followed by alkylation. The reaction behaviour of the new compounds 2 and 4 is investigated. 2-((2-Dimethylthio-1-oxo)ethyl)benzoic acid N,N-dimethylamide (7a) and 2-((2-dimethylthio-1-oxo)ethyl)-benzoic acid 2-methylpiperidide (7b) are surprisingly formed instead of the methylthio substitution products by treatment of 2a with the corresponding amine in the presence of aluminum chloride.
Synthese und Reaktionsverhalten von 3-(Bis(alkylthio)methylen)-3H-isobenzofuran-1-on-und 2-(Bis(alkylthio)methylen)-3(2H)-benzofuranon-Derivaten
摘要:
3(Bis(alkylthio)methylene)-3H-isobenzofuran-1-ones 2a-e and 2-(bis(alkylthio)methylene)-3(2H)-benzofuranone derivatives 4a-c are obtained by reaction of phthalides 1a-d or 3(2H)-benzofuranone (coumaranone 3), respectively, with carbon disulfide under basic conditions followed by alkylation. The reaction behaviour of the new compounds 2 and 4 is investigated. 2-((2-Dimethylthio-1-oxo)ethyl)benzoic acid N,N-dimethylamide (7a) and 2-((2-dimethylthio-1-oxo)ethyl)-benzoic acid 2-methylpiperidide (7b) are surprisingly formed instead of the methylthio substitution products by treatment of 2a with the corresponding amine in the presence of aluminum chloride.
Synthese und Reaktionsverhalten von 3-(Bis(alkylthio)methylen)-3H-isobenzofuran-1-on-und 2-(Bis(alkylthio)methylen)-3(2H)-benzofuranon-Derivaten
作者:T. Gildenast、W. D�lling
DOI:10.1007/bf00810773
日期:1997.4
3(Bis(alkylthio)methylene)-3H-isobenzofuran-1-ones 2a-e and 2-(bis(alkylthio)methylene)-3(2H)-benzofuranone derivatives 4a-c are obtained by reaction of phthalides 1a-d or 3(2H)-benzofuranone (coumaranone 3), respectively, with carbon disulfide under basic conditions followed by alkylation. The reaction behaviour of the new compounds 2 and 4 is investigated. 2-((2-Dimethylthio-1-oxo)ethyl)benzoic acid N,N-dimethylamide (7a) and 2-((2-dimethylthio-1-oxo)ethyl)-benzoic acid 2-methylpiperidide (7b) are surprisingly formed instead of the methylthio substitution products by treatment of 2a with the corresponding amine in the presence of aluminum chloride.