order to realize high birefringence, acetylenes with long molecular size such as bis(phenyldiynyl)benzenes 1 and diphenylhexatriynes 4 are synthesized successfully on the basis of double elimination of the β-substituted sulfones which can be prepared easily by reaction of benzyl or propargyl sulfones with propynal derivatives.
为了实现高双折射,在β-取代砜双消除的基础上,成功合成了双(苯基二炔基)苯1和二苯基己三炔4等长分子
乙炔,β-取代砜可以通过苄基或炔丙基砜的反应轻松制备与
丙炔衍
生物。