Synlett p. 1391 - 1392 (1997)
Update date:2022-08-03
Topics:
Andrés, Celia
Duque-Soladana, Juan P.
Iglesias, Jesús M.
Pedrosa, Rafael
Chiral perhydro-1,3-benzoxazines which carry both olefinic and bromo-aromatic substituents undergo stereo- and regio- radical cyclisations mediated by Bu3SnH. Diastereomeric six-membered and seven-membered rings are formed in positional isomers through selective 6-exo and 7-endo attack respectively.
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