五种成分的杂环化合物有叶绿素、血红蛋白、靛蓝、色氨酸和特定的聚合物。
Compounds having five-membered heterocyclic rings include chlorophyll, hemoglobin, indigo, tryptophan, and certain polymers.
树脂(B)优选为不饱和键减少率为10%以上的共轭二烯聚合物环化物。
The resin (b) is preferred to be conjugated diene polymer cyclization material with unsaturated bond decrement rate more than 10%.
综述了新溶剂1 ，3-二甲基- 2 -咪唑啉酮在有机合成中的应用，如高分子聚合物、杂环化合物和有机金属化合物等的合成。
The applications of a new solvent 1,3-dimethyl-2-imidazolidinone in organic synthesis, such as in synthesis of high polymers, heterocyclic compounds, organometalloidal compounds etc.
应用推荐