乙炔

Two series of tolan-type liquid crystals containing terminal cyano group were synthesized.

设计并合成了一类新型末端氰基取代含氟二苯类液晶。

This paper discussed three methods of producting vinyl etherspreparation from acetylene,dehydrohalogenation and acetals.

论述了烯基醚类化合物的三种主要制备方法法、卤化氢法和缩醛热分解法。

States the latent hazardness of such hydrocarbons as acetylene in air separator, and presents the preventive measures in normal production.

阐述以及碳氢化合物在空分装置具有的潜在危险性,并提出在正常生产的预防措。

Single chamber high pressure gas quenching vacuum furnace,double chamber and multichamber vacuum furnaces implementing the acetylene low pressure carburizing were briefly introduced.

简要介绍了低压渗碳的单室高压气淬真空炉,双室及多室真空炉。

Dicyano 9,10 dihydro 9,10 ethenoanthracene(4) was synthesized by addition reation of acetylenedinitrile and anthracene. Concave tetrazaporphyrin has been obtained from the four molecules of 4.

二氰与蒽环加成反应合成了11,12-二氰-9,10-二氢-9,10-亚烯基蒽(4),4分子4自身加成聚合制备了一种全新凹型四氮杂口卜啉结构化合物。

Two kinds of polymerizable liquid crystal compounds have been prepared successfully in the paper, one is tolan-type liquid crystal compound, another is a phenylcyclohexanethyl liquid crystal compound.

以碘代烷氧基苯与烷基苯为间体,采用为催化剂偶联的方法合成了二苯类液晶化合物。