The kinetics of polymerization ε-caprolactone (CL) initiated by aluminum-alkoxide complexes supported the dianionic forms N,N-bis[methyl-(2-hydroxy-3-tert-butyl-5-R-phenyl)]-N,N-dimethylethylenediamines, (LR)Al(Oi-Pr) (R = OMe, Br, NO2) were studied. ligands are sterically similar but have variable electron donating characteristics due to differing remote (para) ligand substituents R. Saturation observed using [CL]0 2–2.6 M and [complex]0 7 mM, enabling independent determination substrate...

A multiweek organic chemistry laboratory project is described that emphasizes sustainable practices in experimental design. An emphasis on student-driven development of the meant to mirror independent nature research. Students propose environmentally friendly modifications several reactions. With instructor feedback, students search for a literature protocol their most promising reaction. follow procedure as and also carry out modified, greener reaction they have designed own, incorporating...

The recent revision of undergraduate curricular guidelines from the American Chemical Society Committee on Professional Training (ACS-CPT) has generated interest in examining new ways organizing course sequences both for chemistry majors and nonmajors. A radical reconstruction foundation-level curriculum is presented which content been reorganized into three sequences: structure, reactivity, quantitation. It proposed that these areas represent fundamental aspects cross traditional domains...

A series of carvone-derived statistical copolymers, CMXD (CM = carvomenthide; X %D; D dihydrocarvide), were prepared by ring-opening polymerization. The olefinic side chains subsequently modified the thiol–ene reaction using mercaptoethanol to provide CMXD′ (D′ hydroxy-functionalized dihydrocarvide unit). resulting samples, having hydroxy functionality dictated original monomer feed ratio, exploited as renewable polyols in synthesis polyurethanes. polyurethane films characterized tensile...

A one-semester, introductory chemistry course is described that develops a primarily qualitative understanding of structure–property relationships. Starting from an atoms-first approach, the examines properties and three-dimensional structure metallic ionic solids before expanding into thorough investigation molecules. In addition to bonding, geometry, molecular orbitals, intermolecular attractions, other structural topics are included, such as stereochemistry, conformation, factors...

The ability to access chemical literature is an important skill for the developing chemist. Although College of Saint Benedict and John's University chemistry department had implemented a variety individual exercises into introductory course sequence help students develop searching skills, second-year still struggled with navigation bewildering maze resources, texts, databases. This article describes activity organic laboratory instructors coach on how prioritize use multitude resources...

A foundation level course is presented that integrates aspects of organic, inorganic and biochemistry in the context reactivity. The was designed to serve majors chemistry other sciences (biochemistry, biology, nutrition), as well nursing pre-health professions students. Themes were highlight a range applications chemistry, including synthesis, catalysis, materials science, order teach students wider societal significance addition chemical concepts. Special attention paid topics relevant...

2D NMR spectroscopy is regularly utilized for determination of organic structures. Problem-solving using a variety techniques increasingly covered in the undergraduate curriculum. While several advanced texts provide some practice problems, these books are often expensive and aimed at graduate students. A free publicly available set problems with answers was developed to students an opportunity develop their structure elucidation skills.

A modified jigsaw classroom activity is presented for the integrated study of functional groups and their characteristic infrared absorption frequencies. Students individually performed semiempirical studies on vibrational frequencies an assigned molecule compared results to experimental spectrum from a database. The these were discussed in small group exercise discover spectral features that are most useful identifying particular relationship structures.

Road map problems ask students to integrate their knowledge of organic reactions with pattern recognition skills "fill in the blanks" synthesis an compound. Students are asked identify familiar unfamiliar contexts. A practical context, such as a medicinally useful target compound, helps see why study may be important. Drawing from primary literature, small library these was developed.

A foundation-level course is described that integrates material related to reactivity in organic, inorganic, and biochemistry. Designed for second-year students, the serves majors chemistry, biochemistry, biology, as well prehealth-professions students. Building on an earlier developed concepts of nucleophiles electrophiles organic carbonyl chemistry coordination compounds, Reactivity II explores concept mechanistic alternatives substitution reactions alkyl halides transition metal...

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDesigning and Conducting a Purification Scheme as an Organic Chemistry Laboratory PracticalKate J. Graham , Brian Johnson T. Nicholas Jones Edward McIntee Chris P. Schaller View Author Information Department of Chemistry, College Saint Benedict / John''s University, St. Joseph, MN 56374-2099Cite this: Chem. Educ. 2008, 85, 12, 1644Publication Date (Web):December 1, 2008Publication History Received3 August 2009Published online1 December...

Transition metal organometallic reactions have become increasingly important in the synthesis of organic molecules. A new approach has been developed to introduce chemistry, along with and inorganic at foundational level. This change highlights applications chemistry that dramatically evolved recent decades. With this development, a larger number students reached than would typically be exposed reactions. Modules are described transition compounds by analogy thematically similar topics...

A series of guided inquiry modules that introduces students to aspects polymer chemistry is described. The address topics such as biomacromolecules, molecular weight, structure–property relationships, and synthetic approaches, including step-growth chain-growth polymerization well living polymerization. These materials are suitable for use in either a structure reactivity sequence or more traditional general chemistry, organic inorganic chemistry.

Reactivity III is a new course that presents chemical reactions from the domains of organic, inorganic, and biochemistry are not readily categorized by electrophile–nucleophile interactions. Many these involve transfer single electron, in either an intermolecular fashion case oxidation/reduction or intramolecular photochemical events. Others, such as pericyclic reactions, movement electron pairs but lack obvious acid/base analogies build on understanding photochemistry.

A novel laboratory curriculum is presented, developed around some common tasks of a researcher in chemistry: purification, synthesis, and measurement. The capstone the sequence an integrated laboratory, leading to more independent research experience. Students who have completed this appear perform comparably previous students traditional curriculum, based on their handling American Chemical Society Exam questions career placement. Introduction new has coincided with increased numbers majors...

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular Modeling to Predict Regioselectivity of Hydration ReactionsKate J. Graham , Kathleen Skoglund Chris P. Schaller William Muldoon and John B. Klassen View Author Information Department Chemistry, College Saint Benedict, John''s University, St. Joseph, MN 56374-2099Cite this: Chem. Educ. 2000, 77, 3, 396Publication Date (Web):March 1, 2000Publication History Received3 August 2009Published online1 March 2000Published inissue 1...

Traditional first year chemistry curricula have remained essentially unchanged for decades although recent movement to an atoms or organic “first” approach introductory biochemistry courses that replace a semester of course emerged. Outside agencies (American Chemical Society, ASBMB, and the American Association Medical Colleges) recently developed guidelines encourage science departments develop innovative approaches content selection delivery, where competencies skills specified courses....

The Chemistry Department at the College of St. Benedict/St. John's University has integrated biochemistry throughout a dynamic and modern curriculum to enhance its appeal students, better prepare them for science an early entry into research, increase our number majors. In support these changes we have adopted pedagogy that use flipped pre‐class format in‐class group problem solving activities. These align with content scientific reasoning inquiry skills (SIRS) represented in MCAT2015. They...