Journal
TETRAHEDRON LETTERS
Volume 41, Issue 38, Pages 7327-7331Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0040-4039(00)01221-1
Keywords
dithioester; phosphonate; thiocarbonyl; hetero Diels Alder; thiopyran
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Phosphonodithioformates are shown to be good heterodienophiles in [4+2] cycloadditions with open chain and cyclic dienes. Lewis acids efficiently catalyze this hetero Diels-Alder reaction and a selective radical desulfanylation of the cycloadducts using Bu3SnH leads to new (3,6-dihydro-2H-thiopyran-2-yl) phosphonates. (C) 2000 Elsevier Science Ltd. All rights reserved.
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