2-(1 H-苯并三唑-1-基甲基)-1-萘酚(1)可以高产率转化为相应的硫醇4。闪蒸真空热解4会生成2 H-萘[1,2- b ]硫杂环丁烷(5)。苯并三唑基被证明是一个很好的离去基团。然而,随后的氮在快速真空热解条件下发生,并且环戊二烯腈6a,b通过环收缩形成(方案1)。的环加成反应5和亲二烯体或heterodienophiles得到萘缩合硫杂环8,10,12和14(方案2)。
Synthetic Equivalents for Benzo- and Naphthothietes
作者:Herbert Meier、Axel Mayer
DOI:10.1055/s-1996-4211
日期:1996.3
Benzo-condensed 1,3-oxathiin-2-ones 4, 8, 11, 14 were prepared according to the reaction sequences shown in the Schemes 1 and 3. Due to the facile thermal extrusion of CO2 these compounds proved to be very useful synthetic thiete equivalents for the preparation of heterocyclic ring systems containing sulfur. Some examples of hetero Diels-Alder reactions are compiled in the Schemes 2 and 4.
An alternative route to 2<i>H</i>-naphtho[1,2-<i>b</i>]thiete and its cycloaddition products
作者:Norbert Rumpf、Dieter Gröschl、Herbert Meier、Daniela C. Oniciu、Alan R. Katritzky
DOI:10.1002/jhet.5570350648
日期:1998.11
good leaving group; however, a subsequent nitrogen extrusion takes place under flash vacuum pyrolysis conditions and cyclopentadienecarbonitriles 6a,b are formed by a ring contraction (Scheme 1). Cycloaddition reactions of 5 and dienophiles or heterodienophiles yield the naphtho-condensed sulfur heterocycles 8, 10, 12 and 14 (Scheme 2).
2-(1 H-苯并三唑-1-基甲基)-1-萘酚(1)可以高产率转化为相应的硫醇4。闪蒸真空热解4会生成2 H-萘[1,2- b ]硫杂环丁烷(5)。苯并三唑基被证明是一个很好的离去基团。然而,随后的氮在快速真空热解条件下发生,并且环戊二烯腈6a,b通过环收缩形成(方案1)。的环加成反应5和亲二烯体或heterodienophiles得到萘缩合硫杂环8,10,12和14(方案2)。