Highly diastereoselective synthesis of enantioenriched anti-α-allyl-β-fluoroamines

A highly diastereoselective synthesis of anti-α-allyl-β-fluoroamines has been developed involving enantioselective α-fluorination of aldehydes followed by a diastereoselective Petasis allyl borono-Mannich reaction. The products are obtained generally in good overall yields for the two steps and with...

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Published in:Chemical communications (Cambridge, England) England), 2019-05, Vol.55 (43), p.6050-6053
Main Authors: Chevis, Philip J, Wangngae, Sirilak, Thaima, Thanaphat, Carroll, Anthony W, Willis, Anthony C, Pattarawarapan, Mookda, Pyne, Stephen G
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container_issue 43
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container_title Chemical communications (Cambridge, England)
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description A highly diastereoselective synthesis of anti-α-allyl-β-fluoroamines has been developed involving enantioselective α-fluorination of aldehydes followed by a diastereoselective Petasis allyl borono-Mannich reaction. The products are obtained generally in good overall yields for the two steps and with drs of 97 : 3-99 : 1 and ees of 86-92%. Selected products were converted to 3-, 5- and 6-membered ring heterocycles, the latter two types incorporating an exo-cyclic fluorine.
doi_str_mv 10.1039/c9cc02765c
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title Highly diastereoselective synthesis of enantioenriched anti-α-allyl-β-fluoroamines
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