Development of novel metal-catalyzed processes has significant implications for stereoselective organic synthesis and also for our understanding of fundamental organometallic chemistry. When useful new catalytic processes are able to proceed at low catalyst loading, at room temperature and directly on commercially available materials, they can serve as a linchpin for total synthesis efforts and also as an efficient route to the production of basic organic building blocks. Catalytic reactions with these design criteria are the subject of the proposed research. Described within, is a program directed towards introducing a broad range of new and useful catalytic transformations which are the creation of stereogenic carbon-boron bonds. The centerpiece transformation is a catalytic alkene diboration reaction which provides a synthetically versatile vicinal diboron intermediate. In addition to developing this process, we aim to develop the synthetic utility of the diboron adducts such that a rich array of chiral functionalized compounds may be accessed from unsaturated substrates in an asymmetric fashion.
Specific Aims are: (1) Develop modular P-N ligand scaffolds and employ them to develop a model for asymmetric induction and to improve reaction scope. (2) Develop complexity-generating reactions based on cascade sequences that involve conversion of C-B bonds to C-X bonds. (3) Develop synthetic methods that are initiated by diboration of prochiral allenes . (4) Develop chiral ligand structures that are effective for the catalytic enantioselective hydrogenation of vinylboronates .

Agency
National Institute of Health (NIH)
Institute
National Institute of General Medical Sciences (NIGMS)
Type
Research Project (R01)
Project #
3R01GM059417-08S1
Application #
7419097
Study Section
Synthetic and Biological Chemistry A Study Section (SBCA)
Program Officer
Schwab, John M
Project Start
1999-05-01
Project End
2009-06-30
Budget Start
2007-04-01
Budget End
2007-06-30
Support Year
8
Fiscal Year
2007
Total Cost
$21,840
Indirect Cost
Name
Boston College
Department
Chemistry
Type
Schools of Arts and Sciences
DUNS #
045896339
City
Chestnut Hill
State
MA
Country
United States
Zip Code
02467
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Coombs, John R; Zhang, Liang; Morken, James P (2015) Synthesis of vinyl boronates from aldehydes by a practical boron-Wittig reaction. Org Lett 17:1708-11
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