A technique is described for the preparation of a wide variety of basic derivatives of linearly condensed tricyclic systems formed by two external benzene nuclei and a 7-membered central ring having 2 chalcogen atoms as hetero atoms. Derivatives of 11H-dibenzo(b,e)-1,4-dioxepin are obtained when the chalcogens are both oxygen atoms; derivatives of 11H-dibenzo(b,f)-1,4-dithiepin are obtained when the chalcogens are both sulfur atoms; derivatives of 6H-dibenz(b,e)-1,4-oxathiepin and 11H-dibenz(b,f)-1,4-oxathiepin are obtained with combinations of sulfur and oxygen atoms as chalcogens.
描述了一种制备线性紧凑
三环系统的基本衍
生物的技术,该系统由两个外部苯环和一个中央7元环组成,其中有2个
硫属或氧属原子作为杂原子。当
硫属或氧属原子同时存在时,得到11H-二苯并[b,e]-
1,4-二噁烷的衍
生物;当
硫属原子同时存在时,得到11H-二苯并[b,f]-1,4-二
硫杂环的衍
生物;当
硫属和氧属原子组合时,得到6H-二苯并[b,e]-1,4-氧
硫杂环和11H-二苯并[b,f]-1,4-氧
硫杂环的衍
生物。