Rh(I)-catalyzed reaction of 2-(chloromethyl)phenylboronic acids and alkynes leading to indenes
(Chemical Equation Presented) The reaction of 2-(chloromethyl)phenylboronic acid (1) with alkynes in the presence of a Rh(I) complex gave indene derivatives in high yields. The regioselectivity depends on the steric nature of the substituent on the alkynes. A bulky group favors the α-position of indenes.
Reductive coupling of polyfunctionalized organobismuth and organolead arylating reagents in the synthesis of benzopyran derivatives
Benzopyran derivatives were synthesized in good yields by the reactions of tris[2-(chloromethyl)phenyl]bismuth diacetate and 2-(halomethyl)aryllead triacetates with phenols and naturally occurring 4-hydroxycoumarins in the presence of bases according to a
Fedorov,Finet,Ganina,Naumov,Shavyrin
p. 2602 - 2611
(2007/10/03)
Aryllead triacetates in the synthesis of oxaphenanthrene derivatives
Ortho-Halomethylphenyllead triacetates (halo = bromine or chlorine) react with phenols in the presence of triethylamine and a pyridine derivative to afford modest to good yields of dibenzo[b,d]-6H-pyrans.