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关键词： 环境工程专业   有机化学   教学改革  

摘要： 有机化学是环境工程专业的基础课程。结合本校环境工程的专业特色和培养方案,分析了有机化学课程教学存在的问题,文章从教学内容、实验教学和科学研究三个方面对有机化学课程进行了探索性改革,旨在提高学生学习兴趣,提高教学质量。

关键词： 微课   有机化学实验   教学改革  

摘要： 以实现有机化学实验教学的高效组织和实施为目标,开展有机化学课程微课资源建设,分析和探索如何在实验活动中更好的培养学生的创新意识,使学生在获取新知识的同时,提高学生在分析问题以及解决问题方面的能力。克服我院有机化学实验教学中存在的诸多矛盾,使教学组织符合学生学习特点和规律,为有机化学实验教学的组织和开展提供保障。

关键词： Organic Chemistry   Humor/Puzzles/Games   Second-Year Undergraduate   High School/Introductory Chemistry   Kinetics   Laboratory Equipment/Apparatus   Student-Centered Learning  

摘要： Recently there has been a renewed interest in the development and use of pedagogical games, as they provide an interesting approach to the appropriation of knowledge in the context of active learning. However, most didactic games fail to completely implement a cycle of reflection and action, thereby fostering mostly lower-order thinking skills and memorization as opposed to critical thinking and problem solving skills. This limitation can be traced back to the ineffective carrot and stick approach to game design that is widely applied in the context of pedagogical games. In this article, we discuss the development of a pedagogical game in which the game elements were carefully chosen to seamlessly merge with the desired chemistry content and therefore create an engaging and fun learning experience. In particular, in order to allow complex concepts to naturally emerge from a simple set of rules, we followed the so-called European approach to game design. The resulting game, MOL (Mastering the Organic chemistry Laboratory), was tested with 77 students of ages between 19 and 21 enrolled in organic chemistry courses for chemical engineering majors and 26 students of ages between 17 and 18 enrolled in a 12th grade chemistry class. The results of these classroom implementations indicate that MOL clarifies several key concepts regarding organic reactions, particularly kinetic and thermodynamic aspects. Furthermore, they suggest that MOL can be effectively used to demonstrate how the aforementioned concepts interrelate in a real laboratory situation, therefore stimulating a sense of critical thinking.

关键词： Upper-Division Undergraduate   Organic Chemistry   Interdisciplinary/Multidisciplinary   Laboratory Instruction   Collaborative/Cooperative Learning   Inquiry-Based/Discovery Learning   Catalysis   Organometallics   Photochemistry   Coordination Compounds  

摘要： An undergraduate organic chemistry laboratory experiment that provides an introduction to the concepts and practices of photoredox catalysis is reported. While undergraduate-level photochemistry experiments typically place emphasis on analytical properties of catalysts rather than synthetic applications, this experiment showcases the power and versatility of photoredox chemistry in modern organic syntheses. A hypothesis-driven approach is utilized as students apply chemical reasoning to formulate hypotheses predicting the relative catalytic activity of Ru(bpy)(3)(2+) and Ru(bpm)(3)(2+), which differ slightly in ligand structure. Students work collaboratively to obtain conversion data in [2 + 2] cycloadditions catalyzed by Ru(bpy)(3)(2+) and Ru(bpm)(3)(2+), and use the data to support or refute their hypotheses. The operationally straightforward experimental protocol has been shown to be robust and reproducible, providing unambiguous results that facilitate student interpretation. Furthermore, the experiment trains students in chemical thinking needed for conducting research.

关键词： Second-Year Undergraduate   Curriculum   Communication/Writing   Green Chemistry   Organic Chemistry   Industrial Chemistry   Applications of Chemistry  

摘要： In the writing assignment and presentation described, small groups of students investigate a given industrial business/company that has made major changes to a synthesis, process, or procedure by implementing one or more of the 12 principles of green chemistry. Students submit a short paper on the assignment and present the project during the recitation portion of the laboratory. By studying an industrial change to a given synthesis or process, students become more aware of their environmental and global responsibility. They also begin to realize that businesses are incorporating green principles in their practices. In a self-reported survey nearly all (97%) of students of students reported an increased understanding of the principles of green chemistry and an increased interest in the topic. Results of surveys indicated that nearly all students felt that the project should be continued.

关键词： 1,4-Addition   Arylation   Biocatalysis   Oxidation   Tyrosinase  

摘要： A tyrosinase-mediated arylation towards a variety of different building blocks is presented. Utilizing phenol or simple substituted phenols, the corresponding quinones are synthesized in a two-step procedure by an enzyme-catalyzed oxidation (tyrosinase from Aspergillus oryzae). The activated intermediates undergo a 1,4-addition with selected -dicarbonyl compounds. Starting from phenol, yields of isolated product for the hydroxylation-oxidation-arylation sequence range from 43-77%, whereas substituted acceptors provided 9-55%, only. Different substitution patterns on phenol revealed that electron donating functionalities are preferentially accepted to electron withdrawing ones, whereas ortho-substituted phenols are not accepted at all.