6-Methoxy-2- benzothiophene

Aznlen l-Sulfo-(+ Salze) V/2c,292f. 1-Benzothiophen 3-Hydroxy-2-methoxy-carbonyl- E6b/1, 224... 

H-Azepin 2(6)-Methoxy-6(2)-phenylsulfinyl- E16c, 178 (N3-Benzol-Der./H3C—OH) 1-Benzothiophen 2-Amino-3-(2-furylcarbonyl)-4,5,6,7-tetra-hydro- E6a, 234 [H10C =C(CO —Het)—... 

Formyl-] -benzothiophen ist nach Vilsmeier nur in schlechter Ausbeute erhaltlich bes-ser erfolgt dessen Synthese mit Alkoxy-dichlor-methanen (s.S. 27)51S. Die Reaktionstrag-heit des Heterocyclus kommt auch in der Formylierung der 7-Stellung bei 4-Methoxy-l-benzothiophen zum Ausdruck516 ... 

Molecular orbital calculations for the complex formed from benzothiophene indicated that the product of the oxidative addition has a positive charge eaused by the reaction. " 2-Ghloro- and 3-chloro-thiophenes undergo cleavage of less sterically hindered G-S bonds selectively on the reaction with Pt(PEt3)3, yielding 446 and 447, respectively (Scheme 64). The reactions of 2-methoxy- and 3-methoxythiophenes produce a mixture of the regioisomers 448-451, while the dinuclear product 452 is also observed in the latter reaction. 

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