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pro vyhledávání: '"Steven M. Bachrach"'
Autor:
Steven M. Bachrach
Publikováno v:
Química Nova, Vol 22, Iss 2, Pp 273-276 (1999)
Internet publication will radically alter how chemists will publish their research in the next century. In this article, we describe two fundamental changes: enhanced chemical publication which allows chemists to publish materials that cannot be publ
Externí odkaz:
https://doaj.org/article/81ddb3045e8e417a8149eeeb0a100142
Autor:
Steven M. Bachrach
Publikováno v:
Thinking Like a Physical Organic Chemist ISBN: 0197640370
A major category in organic chemistry is aromaticity, which has to do with compounds that express special stability. Aromaticity is discussed in terms of this stabilization, Hückel’s rule, and the propensity of some compounds to undergo substituti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cd4eeda7dc647b42991e302c1641eaab
https://doi.org/10.1093/oso/9780197640371.003.0016
https://doi.org/10.1093/oso/9780197640371.003.0016
Autor:
Steven M. Bachrach
Publikováno v:
Thinking Like a Physical Organic Chemist ISBN: 0197640370
Valuable tools that synthetic organic chemists often use to steer a reaction toward one product rather than toward another rest upon the concepts of kinetic versus thermodynamic control. These concepts are discussed using the example of 1,2- and 1,4-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::72c66496f1f106f8d2227067714f26c7
https://doi.org/10.1093/oso/9780197640371.003.0014
https://doi.org/10.1093/oso/9780197640371.003.0014
Autor:
Steven M. Bachrach
Publikováno v:
Thinking Like a Physical Organic Chemist ISBN: 0197640370
A fascinating result of quantum mechanics is that objects can tunnel through barriers even if they lack the energy to climb over them. Recent experiments involving carbene rearrangements demonstrate that these reactions proceed through quantum mechan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4b0bd1320adaf4d413a2d23421451e9a
https://doi.org/10.1093/oso/9780197640371.003.0015
https://doi.org/10.1093/oso/9780197640371.003.0015
Autor:
Steven M. Bachrach
Publikováno v:
Thinking Like a Physical Organic Chemist ISBN: 0197640370
Our concept to the reaction mechanism assumes that molecules move on a potential energy surface characterized by minima and transition states. The geometrical features of surfaces are defined by degrees of freedom and curvatures.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::26f9c2fc946b69994346a0486119bfc9
https://doi.org/10.1093/oso/9780197640371.003.0004
https://doi.org/10.1093/oso/9780197640371.003.0004
Autor:
Steven M. Bachrach
Publikováno v:
Thinking Like a Physical Organic Chemist ISBN: 0197640370
Over the past two decades, many experiments have exposed reactions that do not operate under statistical theories. These experiments directly call into question the meaning of a reaction mechanism, when features of the potential energy surface may no
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dcd542d1e5367e4c510ec175d185f7da
https://doi.org/10.1093/oso/9780197640371.003.0018
https://doi.org/10.1093/oso/9780197640371.003.0018
Autor:
Steven M. Bachrach
Publikováno v:
Thinking Like a Physical Organic Chemist ISBN: 0197640370
Nucleophilic substitution reactions are often the first type of chemical reaction presented in an introductory organic chemistry course. Kinetics, the study of reaction rates, are introduced and used to define the first type of nucleophilic substitut
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::59b8c59a1a4e9b9e1728a17fd3dc4160
https://doi.org/10.1093/oso/9780197640371.003.0005
https://doi.org/10.1093/oso/9780197640371.003.0005
Autor:
Steven M. Bachrach
Publikováno v:
Thinking Like a Physical Organic Chemist ISBN: 0197640370
Nucleophilic substation reactions are often in competition with elimination reactions, a competition between nucleophilicity and basicity. The E1 and E2 reaction mechanisms are described. The stereochemistry of the E2 is explained using molecular orb
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::28f0b20bc40f552f994c4adac82ce7ea
https://doi.org/10.1093/oso/9780197640371.003.0010
https://doi.org/10.1093/oso/9780197640371.003.0010
Autor:
Steven M. Bachrach
Publikováno v:
Thinking Like a Physical Organic Chemist ISBN: 0197640370
A few details of nucleophilic substitution are presented. Solvent polarity and ability to participate in hydrogen bonding allow for the selection between the SN1 and SN2 reactions. Isotopes enable close examination of nucleophilic reactions. The endo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a8136ec6a7d17bd6b55cb1506d10f21
https://doi.org/10.1093/oso/9780197640371.003.0009
https://doi.org/10.1093/oso/9780197640371.003.0009
Autor:
Steven M. Bachrach
Publikováno v:
Thinking Like a Physical Organic Chemist ISBN: 0197640370
This chapter describes some of the fundamental concepts of organic chemistry, distinguishing between synthetic and physical organic chemistry. The concepts of the chemical bond, valence, molecular structure, and chemical reaction are presented in a n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0819db421bba3c94f8f4a8924a12eeca
https://doi.org/10.1093/oso/9780197640371.003.0002
https://doi.org/10.1093/oso/9780197640371.003.0002