Abstract
Abstract The action of sodium amide on tricarbonyl-η 6 -[1′,2′,3′,4′-tetrahydro-spiro(1,3-dioxolane-2,1′-naphthalene)]chromium followed by reaction with sodium bromoacetate gives tricarbonyl-η 6 -[1-(1,2,3,4-tetrahydro-4-oxonaphthalene)acetic acid]chromium ( 4 ). Some procedures to transform 4 into 1-( N -benzyl-2-aminoethyl)-1,2-dihydronaphthalene ( 10 )—a synthon to 6,7-benzomorphanes—are described. Cyclization of 10 by action of mercury(II) acetate yields 3-benzyl-1,2,3,4,5,6-hexahydro-1-hydroxy-2,6-methano-3-benzazocine ( 11 ).
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