Enantioselective syntheses of ring-C precursors of vitamin B12. Substrate control. A novel Si-assisted elimination of vinyl bromides |
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| Authors: | Jacobi Peter A Tassa Carlos |
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| Institution: | Burke Chemical Laboratory, Dartmouth College, Hanover, New Hampshire 03755, USA. peter.a.jacobi@dartmouth.edu |
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| Abstract: | Homochiral ring-C precursors 34 of Vitamin B(12) have been prepared by Ireland-Claisen rearrangement of allyl esters 32, followed by a novel Si-assisted elimination of HBr. reaction: see text] |
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