| 1. | The reaction was found to be highly stereoselective .
此反应表现出高度的立体选择性。 |
| 2. | The stereospecificity of the thermal cleavage of pyrazolines is lacking although stereoselectivity does exist .
二氢吡唑热解虽然有立体选择性，但没有立体定向性。 |
| 3. | Asymmetric stereoselective polymerization
不对称立体选择性聚合 |
| 4. | Modification of synthetic process of o , o - diethyl thiophosphoryl chloride
二氢呋喃衍生物的立体选择性合成 |
| 5. | Preparation of alkynyl sulfides and the stereoselective synthesis of - - iodovinyl sulfides
碘代烯基硫醚的立体选择性合成 |
| 6. | Theoretical study on the stereoselectivity of intramolecular 4 - methyl - 5 - ethenyl - heptanitrile oxide cycloaddition
庚腈氧化物分子内环加成反应的立体选择性 |
| 7. | The development of exceptionally efficient , stereoselective , and chemoselective reactions that can be applied to a wide range of substrates play key roles
在此过程中，发展具有立体选择性和区域选择性，能够广泛应用于多种底物的有机化学反应起着关键作用。 |
| 8. | Short excited state lifetime and low activation energy for reactions in the excited states leave little room for manipulating the diastereomeric transition state when the photochemical reactions occur in solution
最新的研究表明，采用含手性空间或经手性修饰的微环境可以使光化学反应的立体选择性大大提高。 |
| 9. | With the characteristics such as high catalytic efficiency , high degree of stereoselectivity and mild reaction condition , enzymatic preparation of chiral compounds have became the horspot of research and application in chemical field
酶法合成手性化合物具有催化效率高、立体选择性强、条件温和等优点，已成为目前化工领域研究和应用的热点。 |
