Itoh Group Literature Review

Redox Chemistry of a Hydroxyphenyl-Substituted Borane Angewandte Chemie International Edition  by Po-Yeng Feng, Yi-Hung Liu, Tien-Sung Lin, Shie-Ming Peng, Ching-Wen Chiu  /   22h   //   keep unread   //   hide   //   preview Abstract Chemical reduction of a hydroxyphenyl-substituted borane triggers a sequential electron- and intramolecular hydrogen-atom-transfer process to afford a hydridoborate phenoxide dianion. On the other hand, hydrogen-atom abstraction of the borane leads to the isolation of a neutral borylated phenoxyl radical, which can be transformed to the corresponding benzoquinone borataalkene derivative by reduction with cobaltocene. A radical approach:  Chemical reduction of a hydroxyphenyl-substituted borane triggers a sequential electron- and hydrogen-atom-transfer process to afford a hydridoborate phenoxide dianion. Hydrogen-atom abstraction of the borane allows isolation of a neutral borylated phenoxyl radical, which can be transformed to a benzoquinone b

Valerie A. Williams   † ,  Peter T. Wolczanski   * † ,  Jörg Sutter   ‡ ,  Karsten Meyer   ‡ ,  Emil B. Lobkovsky   † , and Thomas R. Cundari   § †  Baker Laboratory, Department of Chemistry & Chemical Biology,  Cornell University , Ithaca, New York 14853,  United States ‡  Department of Chemistry & Pharmacy,  University of Erlangen-Nuremberg , Egerlandstrasse 1. D-91058 Erlangen,  Germany §  Department of Chemistry, Center for Advanced Scientific Computing and Modeling (CASCaM), University of North Texas , Box 305070, Denton, Texas 76203-5070,  United States Inorg. Chem. , Article ASAP DOI:  10.1021/ic5001123 Publication Date (Web): April 24, 2014 Copyright © 2014 American Chemical Society *E-mail:  ptw2@cornell.edu . Fax:  607 255 4173 . Synopsis Nanac-based tetradentate chelates, {nacnac-(CH2py)2}− ({nn(PM)2}−) and {nacnac-(CH2py)(CHpy)}n ({nn(PM)(PI)}n), have been applied to iron, and the latter exhibits redox noninnocent behavior (n = 2−) in {nn(P

Ellen M. Matson   ,  Jeffrey A. Bertke   , and  Alison R. Fout   * School of Chemical Sciences,  University of Illinois at Urbana−Champaign , 600 S. Mathews Avenue Urbana, Illinois 61801,  United States Inorg. Chem. , Article ASAP DOI:  10.1021/ic500102c Publication Date (Web): April 23, 2014 Copyright © 2014 American Chemical Society *E-mail:  fout@illinois.edu . Synopsis A tripodal ligand platform, tris(5-cycloiminopyrrol-2-ylmethyl)amine (H3[N(piCy)3]) is reported. The ability of the ligand to tautomerize to the amino azafulvene H3[N(afaCy)3] upon substrate addition is evident in the isolation of a series of iron(II) complexes. The combined data for the iron complexes establishes that each arm of the tripodal ligand can tautomerize independently, depending on electronic needs of the iron center and substrate coordination. Abstract A tripodal ligand platform, tris(5-cycloiminopyrrol-2-ylmethyl)amine (H 3 [N(pi Cy ) 3 ]), that features a hydrogen bond-ac

by Oliver Cooper, Clément Camp, Jacques Pécaut, Christos E. Kefalidis, Laurent Maron, Serge Gambarelli and Marinella Mazzanti  /  2h   //   keep unread   //   hide   //   preview Journal of the American Chemical Society DOI: 10.1021/ja5017624 Visit Website

Julie E. Gleason a , 1 ,  Ahmad Galaleldeen b , 1 ,  Ryan L. Peterson a ,  Alexander B. Taylor c ,  Stephen P. Holloway c , Jessica Waninger-Saroni b ,  Brendan P. Cormack d ,  Diane E. Cabelli e ,  P. John Hart c , f , 2 , and Valeria Cizewski Culotta a , 2 Author Affiliations a Department of Biochemistry and Molecular Biology, Johns Hopkins University Bloomberg School of Public Health, Baltimore,  MD  21205; b Department of Biological Sciences, St. Mary’s University, San Antonio,  TX  78228; c Department of Biochemistry, University of Texas Health Science Center, San Antonio,  TX  78229; d Department of Molecular Biology and Genetics, Johns Hopkins University School of Medicine, Baltimore,  MD  21205; e Chemistry Department, Brookhaven National Laboratories, Upton,  NY  11973-5000; and f Department of Veterans Affairs, Geriatric Research, Education, and Clinical Center, South Texas Veterans Health Care System, San Antonio,  TX  78229 Significance

Article ACS ActiveView PDF Hi-Res Print, Annotate, Reference QuickView PDF  [1148 KB] PDF w/ Links [403 KB] Full Text HTML Abstract Supporting Info -> Figures Reference QuickView Add to ACS ChemWorx Bo Zheng   † ,  Fengzhi Tang   † ,  Jia Luo   † ,  Jason W. Schultz   † ,  Nigam P. Rath   ‡ , and  Liviu M. Mirica   * † †  Department of Chemistry,  Washington University , One Brookings Drive, St. Louis, Missouri 63130-4899, United States ‡  Department of Chemistry and Biochemistry, University of Missouri-St. Louis , One University Boulevard, St. Louis, Missouri 63121-4400,  United States J. Am. Chem. Soc. , Article ASAP DOI:  10.1021/ja5024749 Publication Date (Web): April 8, 2014 Copyright © 2014 American Chemical Society mirica@wustl.edu Section: Organometallic and Organometalloidal Compounds Abstract Nickel complexes have been widely employed as catalysts in C–C and C–heteroatom bond formation reactions. In addition

Communication You have full text access to this content Dr. Tianbiao Liu 1,* ,  Dr. Xiaoping Wang 2 , Dr. Christina Hoffmann 2 ,  Dr. Daniel L. DuBois 1  and Dr. R. Morris Bullock 1,* Article first published online: 22 APR 2014 DOI: 10.1002/anie.201402090 © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Issue Additional Information (Show All) Abstract Article References Supporting Information Cited By View Full Article with Supporting Information (HTML)   Enhanced Article (HTML)   Get PDF (847K) Keywords: enzyme models; hydrogen; hydrogenases; iron; neutron diffraction Abstract Hydrogenase enzymes in nature use hydrogen as a fuel, but the heterolytic cleavage of H H bonds cannot be readily observed in enzymes. Here we show that an iron complex with pendant amines in the diphosphine ligand cleaves hydrogen heterolytically. The product has a strong Fe-H⋅⋅⋅H-N dihydrogen bond. The structure was determined by single-crystal neutron d